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C# - Code Snippets for the Gang for Four (GOF) Design Patterns

Veröffentlicht von am 11/25/2009
(5 Bewertungen)
C# Code Snippets for the Gang for Four (GOF) Design Patterns. Shortcut is "dpdesignpatternname", e.g. dpsingleton for Singleton. The Design Patterns are:

Singleton
Abstract Factory
Adapter
Bridge
Builder
Chain
Command
Composite
Decorator
Facade
FactoryMethod
Flyweight
Interpreter
Mediator
Memento
Observer
Proxy
State
Strategy
Template
Visitor
<?xml version="1.0" encoding="utf-8" ?>
<CodeSnippets xmlns="http://schemas.microsoft.com/VisualStudio/2005/CodeSnippet">
	<CodeSnippet Format="1.0.0">
		<Header>
			<Title>simple singleton</Title>
			<Shortcut>dpsingleton</Shortcut>
			<Author>Khoder Elzein</Author>
			<Description>singleton pattern multithreaded</Description>
		</Header>
		<Snippet>
			<Declarations>
				<Literal Editable="true">
					<ID>ClassName</ID>
					<ToolTip>Replaces with class name</ToolTip>
					<Default>Singleton</Default>
				</Literal>
			</Declarations>
			<Code Language="CSharp" Kind="type decl">
				<![CDATA[public class $ClassName$
	{
		// declare singleton field
		private volatile static $ClassName$ instance;
        // Lock synchronization object
        private static object syncLock = new object();
		
		// private constructor.
		private $ClassName$() 
		{
		}
		
		// Get instance
		public static $ClassName$ GetInstance()
		{			
            if (instance == null)
            {
                lock (syncLock)
                {
                    if (instance == null)
                    {
                        instance = new $ClassName$();
                    }
                }
            }    
            return instance;
		// class implementation
		$end$
	}
	]]>
			</Code>
		</Snippet>
	</CodeSnippet>
	
	<CodeSnippet Format="1.0.0">
		<Header>
			<Title>Abstract Factory </Title>
			<Shortcut>dpabstractfactory</Shortcut>
			<Author>Khoder Elzein</Author>
			<Description>abstract factory</Description>
		</Header>
		<Snippet>
			<Declarations>
				<Literal Editable="true">
					<ID>AbstractFactory</ID>
					<ToolTip>Replaces with class name</ToolTip>
					<Default>AbstractFactory</Default>
				</Literal>
				<Literal Editable="true">
					<ID>AbstractProductA</ID>
					<ToolTip>Replaces with class name</ToolTip>
					<Default>AbstractProductA</Default>
				</Literal>
				<Literal Editable="true">
					<ID>AbstractProductB</ID>
					<ToolTip>Replaces with class name</ToolTip>
					<Default>AbstractProductB</Default>
				</Literal>
				<Literal Editable="true">
					<ID>ConcreteFactory1</ID>
					<ToolTip>Replaces with class name</ToolTip>
					<Default>ConcreteFactory1</Default>
				</Literal>
				<Literal Editable="true">
					<ID>ConcreteFactory2</ID>
					<ToolTip>Replaces with class name</ToolTip>
					<Default>ConcreteFactory2</Default>
				</Literal>
				<Literal Editable="true">
					<ID>ConcreteProductA1</ID>
					<ToolTip>Replaces with class name</ToolTip>
					<Default>ConcreteProductA1</Default>
				</Literal>
				<Literal Editable="true">
					<ID>ConcreteProductA2</ID>
					<ToolTip>Replaces with class name</ToolTip>
					<Default>ConcreteProductA2</Default>
				</Literal>
				<Literal Editable="true">
					<ID>ConcreteProductB1</ID>
					<ToolTip>Replaces with class name</ToolTip>
					<Default>ConcreteProductB1</Default>
				</Literal>
				<Literal Editable="true">
					<ID>ConcreteProductB2</ID>
					<ToolTip>Replaces with class name</ToolTip>
					<Default>ConcreteProductB2</Default>
				</Literal>

			</Declarations>
			<Code Language="CSharp" Kind="type decl">
				<![CDATA[
    // $AbstractFactory$
    abstract class $AbstractFactory$
    {
        public abstract $AbstractProductA$ CreateProductA();
        public abstract $AbstractProductB$ CreateProductB();
    }

    // $ConcreteFactory1$
    class $ConcreteFactory1$ : $AbstractFactory$
    {
        public override $AbstractProductA$ CreateProductA()
        {
            return new $ConcreteProductA1$();
        }
        public override $AbstractProductB$ CreateProductB()
        {
            return new $ConcreteProductB1$();
        }
    }

    // $ConcreteFactory2$
    class $ConcreteFactory2$ : $AbstractFactory$
    {
        public override $AbstractProductA$ CreateProductA()
        {
            return new $ConcreteProductA2$();
        }
        public override $AbstractProductB$ CreateProductB()
        {
            return new $ConcreteProductB2$();
        }
    }

    // $AbstractProductA$
    abstract class $AbstractProductA$
    {
    }

    // $AbstractProductB$
    abstract class $AbstractProductB$
    {
    }

    // $ConcreteProductA1$
    class $ConcreteProductA1$ : $AbstractProductA$
    {
    }

    // $ConcreteProductB1$
    class $ConcreteProductB1$ : $AbstractProductB$
    {
    }

    // $ConcreteProductA2$
    class $ConcreteProductA2$ : $AbstractProductA$
    {
    }

    // $ConcreteProductB2$
    class $ConcreteProductB2$ : $AbstractProductB$
    {
    }
				]]>
			</Code>
		</Snippet>
	</CodeSnippet>

  <CodeSnippet Format="1.0.0">
    <Header>
      <Title>Adapter</Title>
      <Shortcut>dpadapter</Shortcut>
      <Author>Khoder Elzein</Author>
      <Description>Adapter pattern</Description>
    </Header>
    <Snippet>
      <Declarations>
        <Literal Editable="true">
          <ID>Adapter</ID>
          <ToolTip>Replaces with class name</ToolTip>
          <Default>Adapter</Default>
        </Literal>
        <Literal Editable="true">
          <ID>Adaptee</ID>
          <ToolTip>Replaces with class name</ToolTip>
          <Default>Adaptee</Default>
        </Literal>
        <Literal Editable="true">
          <ID>Target</ID>
          <ToolTip>Replaces with class name</ToolTip>
          <Default>Target</Default>
        </Literal>
        <Literal Editable="true">
          <ID>AdapteeRequest</ID>
          <ToolTip>Replaces with class name</ToolTip>
          <Default>AdapteeRequest</Default>
        </Literal>
        <Literal Editable="true">
          <ID>TargetRequest</ID>
          <ToolTip>Replaces with class name</ToolTip>
          <Default>TargetRequest</Default>
        </Literal>

      </Declarations>
      <Code Language="CSharp" Kind="type decl">
        <![CDATA[
    // $Target$ 
    class $Target$
    {
        public virtual void $TargetRequest$()
        {
        }
    }

    // $Adapter$ 
    class $Adapter$ : $Target$
    {
        private $Adaptee$ adaptee = new $Adaptee$();
        public override void $TargetRequest$()
        {
            // Possibly do some other work
            //   and then call $AdapteeRequest$
            adaptee.$AdapteeRequest$();
        }
    }

    // $Adaptee$
    class $Adaptee$
    {
        public void $AdapteeRequest$()
        {
        }
    }
}

				]]>
      </Code>
    </Snippet>
  </CodeSnippet>

  <CodeSnippet Format="1.0.0">
    <Header>
      <Title>Bridge</Title>
      <Shortcut>dpbridge</Shortcut>
      <Author>Khoder Elzein</Author>
      <Description>Bridge</Description>
    </Header>
    <Snippet>
      <Declarations>
        <Literal Editable="true">
          <ID>Abstraction</ID>
          <ToolTip>Replaces with class name</ToolTip>
          <Default>Abstraction</Default>
        </Literal>
        <Literal Editable="true">
          <ID>RefinedAbstraction</ID>
          <ToolTip>Replaces with class name</ToolTip>
          <Default>RefinedAbstraction</Default>
        </Literal>
        <Literal Editable="true">
          <ID>Implementation</ID>
          <ToolTip>Replaces with class name</ToolTip>
          <Default>Implementation</Default>
        </Literal>
        <Literal Editable="true">
          <ID>RefinedImplementationA</ID>
          <ToolTip>Replaces with class name</ToolTip>
          <Default>RefinedImplementationA</Default>
        </Literal>
        <Literal Editable="true">
          <ID>RefinedImplementationB</ID>
          <ToolTip>Replaces with class name</ToolTip>
          <Default>RefinedImplementationB</Default>
        </Literal>
        <Literal Editable="true">
          <ID>Operation</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>Operation</Default>
        </Literal>
        <Literal Editable="true">
          <ID>implementation</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>implementation</Default>
        </Literal>
      </Declarations>
      <Code Language="CSharp" Kind="type decl">
        <![CDATA[
    // $Abstraction$
    class $Abstraction$
    {
        protected $Implementation$ $implementation";

        // Property
        public $Implementation$ $Implementation$
        {
            set{ $implementation" = value; }
        }

        public virtual void $Operation$()
        {
            $implementation".$Operation$();
        }
    }

    // $Implementation$ 
    abstract class $Implementation$
    {
        public abstract void $Operation$();
    }

    // $RefinedAbstraction$

    class $RefinedAbstraction$ : $Abstraction$
    {
        public override void $Operation$()
        {
            $implementation".$Operation$();
        }
    }

    // $RefinedImplementationA$
    class $RefinedImplementationA$ : $Implementation$
    {
        public override void $Operation$()
        {
        }
    }

    // $RefinedImplementationB$
    class $RefinedImplementationA$ : $Implementation$
    {
        public override void $Operation$()
        {
        }
    }
				]]>
      </Code>
    </Snippet>
  </CodeSnippet>

  <CodeSnippet Format="1.0.0">
    <Header>
      <Title>Builder</Title>
      <Shortcut>dpbuilder</Shortcut>
      <Author>Khoder Elzein</Author>
      <Description>Builder pattern</Description>
    </Header>
    <Snippet>
      <Declarations>
        <Literal Editable="true">
          <ID>Director</ID>
          <ToolTip>Replaces with class name</ToolTip>
          <Default>Director</Default>
        </Literal>
        <Literal Editable="true">
          <ID>Builder</ID>
          <ToolTip>Replaces with class name</ToolTip>
          <Default>Builder</Default>
        </Literal>
        <Literal Editable="true">
          <ID>builder</ID>
          <ToolTip>Replaces with class name</ToolTip>
          <Default>builder</Default>
        </Literal>
        <Literal Editable="true">
          <ID>ConcreteBuilder1</ID>
          <ToolTip>Replaces with class name</ToolTip>
          <Default>ConcreteBuilder1</Default>
        </Literal>
        <Literal Editable="true">
          <ID>ConcreteBuilder2</ID>
          <ToolTip>Replaces with class name</ToolTip>
          <Default>ConcreteBuilder2</Default>
        </Literal>
        <Literal Editable="true">
          <ID>BuildA</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>BuildA</Default>
        </Literal>
        <Literal Editable="true">
          <ID>BuildB</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>BuildB</Default>
        </Literal>
        <Literal Editable="true">
          <ID>Product</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>Product</Default>
        </Literal>
        <Literal Editable="true">
          <ID>product</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>product</Default>
        </Literal>
        <Literal Editable="true">
          <ID>Build</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>Build</Default>
        </Literal>

      </Declarations>
      <Code Language="CSharp" Kind="type decl">
        <![CDATA[
    //$Director$ 
    class $Director$
    {
        // $Builder$ uses a complex series of steps
        public void Construct($Builder$ $builder$)
        {
            $builder$.$BuildA$();
            $builder$.$BuildB$();
        }
    }

    // $Builder$
    abstract class $Builder$
    {
        public abstract void $BuildA$();
        public abstract void $BuildB$();
        public abstract $Product$ GetResult();
    }

    // $ConcreteBuilder1$
    class $ConcreteBuilder1$ : $Builder$
    {
        private $Product$ $product$ = new $Product$();

        public override void $BuildA$()
        {
            $product$.$Build$("Part1A");
        }

        public override void $BuildB$()
        {
            $product$.$Build$("Part1B");
        }

        public override $Product$ GetResult()
        {
            return $product$;
        }
    }

    // $ConcreteBuilder2$
    class $ConcreteBuilder2$ : $Builder$
    {
        private $Product$ $product$ = new $Product$();

        public override void $BuildA$()
        {
            $product$.$Build$("Part2A");
        }

        public override void $BuildB$()
        {
            $product$.$Build$("Part2B");
        }

        public override $Product$ GetResult()
        {
            return $product$;
        }
    }

    // $Product$
    class $Product$
    {
        public void $Build$(string part)
        {
        }
    }
      ]]>
      </Code>
    </Snippet>
  </CodeSnippet>

  <CodeSnippet Format="1.0.0">
    <Header>
      <Title>Chain</Title>
      <Shortcut>dpchain</Shortcut>
      <Author>Khoder Elzein</Author>
      <Description>Chain of Responsibility Design Pattern</Description>
    </Header>
    <Snippet>
      <Declarations>
        <Literal Editable="true">
          <ID>Handler</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>Handler</Default>
        </Literal>
        <Literal Editable="true">
          <ID>ConcreteHandler1</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>ConcreteHandler1</Default>
        </Literal>
        <Literal Editable="true">
          <ID>ConcreteHandler2</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>ConcreteHandler2</Default>
        </Literal>
        <Literal Editable="true">
          <ID>ConcreteHandler3</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>ConcreteHandler3</Default>
        </Literal>
        <Literal Editable="true">
          <ID>Handle</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>Handle</Default>
        </Literal>
        <Literal Editable="true">
          <ID>successor</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>successor</Default>
        </Literal>
        <Literal Editable="true">
          <ID>request</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>request</Default>
        </Literal>

      </Declarations>
      <Code Language="CSharp" Kind="type decl">
        <![CDATA[
    // $Handler$ 
    abstract class $Handler$ 
    {
        protected $Handler$ $successor$;
  
        public void SetSuccessor($Handler$ $successor$)
        {
            this.$successor$ = $successor$;
        }

        public abstract void $Handle$(int $request$);
    }

    // $ConcreteHandler1$
    class $ConcreteHandler1$ : $Handler$
    {
        public override void $Handle$(int $request$)
        {
            if ($request$ == 0)
            {
            // process
            }
            else if ($successor$ != null)
            {
                $successor$.$Handle$($request$);
            }
        }
    }

    // $ConcreteHandler2$
    class $ConcreteHandler2$ : $Handler$
    {
        public override void $Handle$(int $request$)
        {
            if ($request$ > 0)
            {
            // process
            }
            else if ($successor$ != null)
            {
                $successor$.$Handle$($request$);
            }
        }
    }

    // $ConcreteHandler3$
    class $ConcreteHandler3$ : $Handler$
    {
        public override void $Handle$(int $request$)
        {
            if ($request$ < 0)
            {
            // process
            }
            else if ($successor$ != null)
            {
                $successor$.$Handle$($request$);
            }
        }
    }

      ]]>
      </Code>
    </Snippet>
  </CodeSnippet>

  <CodeSnippet Format="1.0.0">
    <Header>
      <Title>Command</Title>
      <Shortcut>dpcommand</Shortcut>
      <Author>Khoder Elzein</Author>
      <Description>Command Design Pattern</Description>
    </Header>
    <Snippet>
      <Declarations>
        <Literal Editable="true">
          <ID>Command</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>Command</Default>
        </Literal>
        <Literal Editable="true">
          <ID>Receiver</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>Receiver</Default>
        </Literal>
        <Literal Editable="true">
          <ID>receiver</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>receiver</Default>
        </Literal>
        <Literal Editable="true">
          <ID>command</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>command</Default>
        </Literal>
        <Literal Editable="true">
          <ID>Execute</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>Execute</Default>
        </Literal>

      </Declarations>
      <Code Language="CSharp" Kind="type decl">
        <![CDATA[
    // $Command$ 
    abstract class $Command$ 
    {
        protected $Receiver$ $receiver$;

        public $Command$($Receiver$ $receiver$)
        {
            this.$receiver$ = $receiver$;
        }

        public abstract void $Execute$();
    }

    // ConcreteCommand 
    class ConcreteCommand : $Command$
    {
        public ConcreteCommand($Receiver$ $receiver$) : 
            base($receiver$) 
        {    
        }

        public override void $Execute$()
        {
            $receiver$.Action();
        }
    }

    // $Receiver$
    class $Receiver$ 
    {
        public void Action()
        {
        }
    }

    // Invoker 
    class Invoker 
    {
        private $Command$ $command$;

        public void SetCommand($Command$ $command$)
        {
            this.$command$ = $command$;
        }

        public void ExecuteCommand()
        {
            $command$.$Execute$();
        }        
    }

      ]]>
      </Code>
    </Snippet>
  </CodeSnippet>

  <CodeSnippet Format="1.0.0">
    <Header>
      <Title>Composite</Title>
      <Shortcut>dpcomposite</Shortcut>
      <Author>Khoder Elzein</Author>
      <Description>Composite Design Pattern</Description>
    </Header>
    <Snippet>
      <Declarations>
        <Literal Editable="true">
          <ID>Component</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>Component</Default>
        </Literal>
        <Literal Editable="true">
          <ID>component</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>component</Default>
        </Literal>
        <Literal Editable="true">
          <ID>Composite</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>Composite</Default>
        </Literal>
        <Literal Editable="true">
          <ID>Leaf</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>Leaf</Default>
        </Literal>
        <Literal Editable="true">
          <ID>Add</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>Add</Default>
        </Literal>
        <Literal Editable="true">
          <ID>Remove</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>Remove</Default>
        </Literal>
        <Literal Editable="true">
          <ID>Display</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>Display</Default>
        </Literal>
      </Declarations>
      <Code Language="CSharp" Kind="type decl">
        <![CDATA[
    // $Component$ 
    abstract class $Component$
    {
        protected string name;

        // Constructor
        public $Component$(string name)
        {
            this.name = name;
        }

        public abstract void $Add$($Component$ c);
        public abstract void $Remove$($Component$ c);
        public abstract void $Display$(int depth);
    }

    // $Composite$ 
    class $Composite$ : $Component$
    {
        private IList<$Component$> children = new List<$Component$>();

        // Constructor
        public $Composite$(string name) : base(name) 
        {    
        }

        public override void $Add$($Component$ $component$)
        {
            children.$Add$($component$);
        }

        public override void $Remove$($Component$ $component$)
        {
            children.$Remove$($component$);
        }

        public override void $Display$(int depth)
        {
            // Recursively display child nodes
            foreach ($Component$ $component$ in children)
            {
              $component$.$Display$($component$);
            }
        }
    }

    // $Leaf$
    class $Leaf$ : $Component$
    {
        // Constructor
        public $Leaf$(string name) : base(name) 
        {    
        }

        public override void $Add$($Component$ c)
        {
        }

        public override void $Remove$($Component$ c)
        {
        }

        public override void $Display$(int depth)
        {
        }
    }
      ]]>
      </Code>
    </Snippet>
  </CodeSnippet>

  <CodeSnippet Format="1.0.0">
    <Header>
      <Title>Decorator</Title>
      <Shortcut>dpdecorator</Shortcut>
      <Author>Khoder Elzein</Author>
      <Description>Decortor Design Pattern</Description>
    </Header>
    <Snippet>
      <Declarations>
        <Literal Editable="true">
          <ID>Component</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>Component</Default>
        </Literal>
        <Literal Editable="true">
          <ID>ConcreteComponent</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>ConcreteComponent</Default>
        </Literal>
        <Literal Editable="true">
          <ID>Decorator</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>Decorator</Default>
        </Literal>
        <Literal Editable="true">
          <ID>ConcreteDecorator</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>ConcreteDecorator</Default>
        </Literal>
        <Literal Editable="true">
          <ID>ConcreteDecoratorA</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>ConcreteDecoratorA</Default>
        </Literal>
        <Literal Editable="true">
          <ID>ConcreteDecoratorB</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>ConcreteDecoratorB</Default>
        </Literal>
        <Literal Editable="true">
          <ID>component</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>component</Default>
        </Literal>
        <Literal Editable="true">
          <ID>Operation</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>Operation</Default>
        </Literal>
      </Declarations>
      <Code Language="CSharp" Kind="type decl">
        <![CDATA[
     // $Component$
    abstract class $Component$
    {
        public abstract void Operation();
    }

    // $ConcreteComponent$
    class $ConcreteComponent$ : $Component$
    {
        public override void Operation()
        {
            Console.WriteLine("$ConcreteComponent$.Operation()");
        }
    }

    // $Decorator$
    abstract class $Decorator$ : $Component$
    {
        protected $Component$ component;

        public void SetComponent($Component$ component)
        {
            this.component = component;
        }

        public override void Operation()
        {
            if (component != null)
            {
                component.Operation();
            }
        }
    }

    // $ConcreteDecoratorA$
    class $ConcreteDecoratorA$ : $Decorator$
    {

        public override void Operation()
        {
            base.Operation();
        }
    }

    // $ConcreteDecoratorB$
    class $ConcreteDecoratorB$ : $Decorator$
    {
        public override void Operation()
        {
            base.Operation();
        }

        void AddedBehavior()
        {
        }
    }

        ]]>
      </Code>
    </Snippet>
  </CodeSnippet>

  <CodeSnippet Format="1.0.0">
    <Header>
      <Title>Facade</Title>
      <Shortcut>dpfacade</Shortcut>
      <Author>Khoder Elzein</Author>
      <Description>Facade Design Pattern</Description>
    </Header>
    <Snippet>
      <Declarations>
        <Literal Editable="true">
          <ID>Facade</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>Facade</Default>
        </Literal>
        <Literal Editable="true">
          <ID>SubSystemA</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>SubSystemA</Default>
        </Literal>
        <Literal Editable="true">
          <ID>SubSystemB</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>SubSystemB</Default>
        </Literal>
      </Declarations>
      <Code Language="CSharp" Kind="type decl">
        <![CDATA[
    // $SubSystemA$ 
    class $SubSystemA$
    {
        public void MethodA()
        {
        }
    }

    // $SubSystemB$
    class $SubSystemB$
    {
        public void MethodB()
        {
        }
    }
   
    // $Facade$
    class $Facade$
    {
        $SubSystemA$ A;
        $SubSystemB$ B;

        public $Facade$()
        {
            A = new $SubSystemA$();
            B = new $SubSystemB$();
        }

        public void Method1()
        {
        }

        public void Method2()
        {
        }
    }
        ]]>
      </Code>
    </Snippet>
  </CodeSnippet>


  <CodeSnippet Format="1.0.0">
    <Header>
      <Title>Flyweight</Title>
      <Shortcut>dpflyweight</Shortcut>
      <Author>Khoder Elzein</Author>
      <Description>FlyweightDesign Pattern</Description>
    </Header>
    <Snippet>
      <Declarations>
        <Literal Editable="true">
          <ID>Flyweight</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>Flyweight</Default>
        </Literal>
        <Literal Editable="true">
          <ID>FlyweightFactory</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>FlyweightFactory</Default>
        </Literal>
        <Literal Editable="true">
          <ID>GetFlyweight</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>GetFlyweight</Default>
        </Literal>
        <Literal Editable="true">
          <ID>Operation</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>Operation</Default>
        </Literal>
        <Literal Editable="true">
          <ID>SharedConcreteFlyweight</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>SharedConcreteFlyweight</Default>
        </Literal>
        <Literal Editable="true">
          <ID>UnsharedConcreteFlyweight</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>UnsharedConcreteFlyweight</Default>
        </Literal>
      </Declarations>
      <Code Language="CSharp" Kind="type decl">
        <![CDATA[
    // $FlyweightFactory$ 
    class $FlyweightFactory$ 
    {

        // Constructor
        public $FlyweightFactory$()
        {
        }

        public $Flyweight$ $GetFlyweight$()
        {
        }
    }

    // $Flyweight$ 
    abstract class $Flyweight$ 
    {
        public abstract void $Operation$();
    }

    //$SharedConcreteFlyweight$ 
    class $SharedConcreteFlyweight$ : $Flyweight$
    {
        public override void $Operation$()
        {
        }
    }

    // $UnsharedConcreteFlyweight$
    class $UnsharedConcreteFlyweight$ : $Flyweight$
    {
        public override void $Operation$()
        {
        }
    }
        ]]>
      </Code>
    </Snippet>
  </CodeSnippet>


  <CodeSnippet Format="1.0.0">
    <Header>
      <Title>Factory Method</Title>
      <Shortcut>dpfactorymethod</Shortcut>
      <Author>Khoder Elzein</Author>
      <Description>Factory Method Design Pattern</Description>
    </Header>
    <Snippet>
      <Declarations>
        <Literal Editable="true">
          <ID>Product</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>Product</Default>
        </Literal>
        <Literal Editable="true">
          <ID>ConcreteProductA</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>ConcreteProductA</Default>
        </Literal>
        <Literal Editable="true">
          <ID>ConcreteProductB</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>ConcreteProductB</Default>
        </Literal>
        <Literal Editable="true">
          <ID>Creator</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>Creator</Default>
        </Literal>
        <Literal Editable="true">
          <ID>ConcreteCreatorA</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>ConcreteCreatorA</Default>
        </Literal>
        <Literal Editable="true">
          <ID>ConcreteCreatorB</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>ConcreteCreatorB</Default>
        </Literal>
        <Literal Editable="true">
          <ID>FactoryMethod</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>FactoryMethod</Default>
        </Literal>
      </Declarations>
      <Code Language="CSharp" Kind="type decl">
        <![CDATA[
    //$Product$
    abstract class $Product$
    {
    }

    //$ConcreteProductA$
    class $ConcreteProductA$ : $Product$
    {
    }

    //$ConcreteProductB$ 
    class $ConcreteProductB$ : $Product$
    {
    }

    //$Creator$
    abstract class $Creator$
    {
        public abstract $Product$ $FactoryMethod$();
    }

    //$ConcreteCreatorA$
    class $ConcreteCreatorA$ : $Creator$
    {
        public override $Product$ $FactoryMethod$()
        {
            return new $ConcreteProductA$();
        }
    }

    //$ConcreteCreatorB$
    class $ConcreteCreatorB$ : $Creator$
    {
        public override $Product$ $FactoryMethod$()
        {
            return new $ConcreteProductB$();
        }
    }
      ]]>
      </Code>
    </Snippet>
  </CodeSnippet>


  <CodeSnippet Format="1.0.0">
    <Header>
      <Title>Interpreter</Title>
      <Shortcut>dpinterpreter</Shortcut>
      <Author>Khoder Elzein</Author>
      <Description>Interpreter Design Pattern</Description>
    </Header>
    <Snippet>
      <Declarations>
        <Literal Editable="true">
          <ID>Context</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>Context</Default>
        </Literal>
        <Literal Editable="true">
          <ID>AbstractExpression</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>AbstractExpression</Default>
        </Literal>
        <Literal Editable="true">
          <ID>ConcreteExpressionA</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>ConcreteExpressionA</Default>
        </Literal>
        <Literal Editable="true">
          <ID>ConcreteExpressionB</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>ConcreteExpressionB</Default>
        </Literal>
        <Literal Editable="true">
          <ID>ConcreteCreatorA</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>ConcreteCreatorA</Default>
        </Literal>
        <Literal Editable="true">
          <ID>ConcreteCreatorB</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>ConcreteCreatorB</Default>
        </Literal>
        <Literal Editable="true">
          <ID>Interpret</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>Interpret</Default>
        </Literal>
      </Declarations>
      <Code Language="CSharp" Kind="type decl">
        <![CDATA[
    //$Context$ 
    class $Context$ 
    {
    }

    //$AbstractExpression$
    abstract class $AbstractExpression$ 
    {
        public abstract void $Interpret$($Context$ context);
    }

    //$ConcreteExpressionA$
    class $ConcreteExpressionA$: $AbstractExpression$
    {
        public override void $Interpret$($Context$ context)    
        {
        }
    }

    //$ConcreteExpressionB$ 
    class $ConcreteExpressionB$ : $AbstractExpression$
    {
        public override void $Interpret$($Context$ context)    
        {
        }    
    }      ]]>
      </Code>
    </Snippet>
  </CodeSnippet>


  <CodeSnippet Format="1.0.0">
    <Header>
      <Title>Mediator</Title>
      <Shortcut>dpmediator</Shortcut>
      <Author>Khoder Elzein</Author>
      <Description>Mediator Design Pattern</Description>
    </Header>
    <Snippet>
      <Declarations>
        <Literal Editable="true">
          <ID>Mediator</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>Mediator</Default>
        </Literal>
        <Literal Editable="true">
          <ID>ConcreteMediator</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>ConcreteMediator</Default>
        </Literal>
        <Literal Editable="true">
          <ID>Colleague</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>Colleague</Default>
        </Literal>
        <Literal Editable="true">
          <ID>ConcreteColleague1</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>ConcreteColleague1</Default>
        </Literal>
        <Literal Editable="true">
          <ID>ConcreteColleague2</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>ConcreteColleague2</Default>
        </Literal>
      </Declarations>
      <Code Language="CSharp" Kind="type decl">
        <![CDATA[
    //$Mediator$ 
    abstract class $Mediator$
    {
        public abstract void Send(string message, 
            $Colleague$ colleague);
    }

    //$ConcreteMediator$
    class $ConcreteMediator$ : $Mediator$
    {
        private $ConcreteColleague1$ colleague1;
        private $ConcreteColleague2$ colleague2;

        public $ConcreteColleague1$ Colleague1
        {
            set{ colleague1 = value; }
        }

        public $ConcreteColleague2$ Colleague2
        {
            set{ colleague2 = value; }
        }

        public override void Send(string message, 
            $Colleague$ colleague)
        {
            if (colleague == colleague1)
            {
                colleague2.Notify(message);
            }
            else
            {
                colleague1.Notify(message);
            }
        }
    }

    //$Colleague$ 
    abstract class $Colleague$
    {
        protected $Mediator$ mediator;

        //Constructor
        public $Colleague$($Mediator$ mediator)
        {
            this.mediator = mediator;
        }
    }

    //$ConcreteColleague1$
    class $ConcreteColleague1$ : $Colleague$
    {
        // Constructor
        public $ConcreteColleague1$($Mediator$ mediator) 
            : base(mediator) 
        { 
        }

        public void Send(string message)
        {
            mediator.Send(message, this);
        }

        public void Notify(string message)
        {
        }
    }

    //$ConcreteColleague2$
    class $ConcreteColleague2$ : $Colleague$
    {
        // Constructor
        public $ConcreteColleague2$($Mediator$ mediator) 
            : base(mediator) 
        { 
        }
  
        public void Send(string message)
        {
            mediator.Send(message, this);
        }

        public void Notify(string message)
        {
        }
    }                        
        ]]>
      </Code>
    </Snippet>
  </CodeSnippet>


  <CodeSnippet Format="1.0.0">
    <Header>
      <Title>Memento</Title>
      <Shortcut>dpmemento</Shortcut>
      <Author>Khoder Elzein</Author>
      <Description>Memento Design Pattern</Description>
    </Header>
    <Snippet>
      <Declarations>
        <Literal Editable="true">
          <ID>Memento</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>Memento</Default>
        </Literal>
        <Literal Editable="true">          
          <ID>Originator</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>Originator</Default>
        </Literal>
        <Literal Editable="true">
          <ID>Caretaker</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>Caretaker</Default>
        </Literal>
      </Declarations>
      <Code Language="CSharp" Kind="type decl">
        <![CDATA[
    //$Originator$
    class $Originator$
    {
        private string state;

        // Property
        public string State
        {
            get{ return state; }
            set{ state = value;}
        }

        public $Memento$ CreateMemento()
        {
            return (new $Memento$(state));
        }

        public void SetMemento($Memento$ memento)
        {
            State = memento.State;
        }
    }
    //$Memento$
    class $Memento$
    {
        private string state;

        // Constructor
        public $Memento$(string state)
        {
            this.state = state;
        }

        // Property
        public string State
        {
            get{ return state; }
        }
    }

    //$Caretaker$ 
    class $Caretaker$
    {
        private $Memento$ memento;

        // Property
        public $Memento$ $Memento$
        {
            set{ memento = value; }
            get{ return memento; }
        }
    }

      ]]>
      </Code>
    </Snippet>
  </CodeSnippet>


  <CodeSnippet Format="1.0.0">
    <Header>
      <Title>Observer</Title>
      <Shortcut>dpobserver</Shortcut>
      <Author>Khoder Elzein</Author>
      <Description>Observer Design Pattern</Description>
    </Header>
    <Snippet>
      <Declarations>
        <Literal Editable="true">
          <ID>Subject</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>Subject</Default>
        </Literal>
        <Literal Editable="true">
          <ID>ConcreteSubject</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>ConcreteSubject</Default>
        </Literal>
        <Literal Editable="true">
          <ID>Observer</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>Observer</Default>
        </Literal>
        <Literal Editable="true">
          <ID>ConcreteObserver</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>ConcreteObserver</Default>
        </Literal>
      </Declarations>
      <Code Language="CSharp" Kind="type decl">
        <![CDATA[
    //$Subject$
    abstract class $Subject$
    {
        private ArrayList observers = new ArrayList();

        public void Attach($Observer$ observer)
        {
            observers.Add(observer);
        }

        public void Detach($Observer$ observer)
        {
            observers.Remove(observer);
        }

        public void Notify()
        {
            foreach ($Observer$ o in observers)
            {
                o.Update();
            }
        }
    }

    //$ConcreteSubject$
    class $ConcreteSubject$ : $Subject$
    {
        private string subjectState;

        // Property
        public string SubjectState
        {
            get{ return subjectState; }
            set{ subjectState = value; }
        }
    }

    //$Observer$ 
    abstract class $Observer$
    {
        public abstract void Update();
    }

    //$ConcreteObserver$
    class $ConcreteObserver$ : $Observer$
    {
        private string name;
        private string observerState;
        private $ConcreteSubject$ subject;

        // Constructor
        public $ConcreteObserver$(
            $ConcreteSubject$ subject, string name)
        {
            this.subject = subject;
            this.name = name;
        }

        public override void Update()
        {
            observerState = subject.SubjectState;
            Console.WriteLine("$Observer$ {0}'s new state is {1}",
                name, observerState);
        }

        // Property
        public $ConcreteSubject$ $Subject$
        {
            get { return subject; }
            set { subject = value; }
        }
    }
      ]]>
      </Code>
    </Snippet>
  </CodeSnippet>


  <CodeSnippet Format="1.0.0">
    <Header>
      <Title>Proxy</Title>
      <Shortcut>dpproxy</Shortcut>
      <Author>Khoder Elzein</Author>
      <Description>Proxy Design Pattern</Description>
    </Header>
    <Snippet>
      <Declarations>
        <Literal Editable="true">
          <ID>Subject</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>Subject</Default>
        </Literal>
        <Literal Editable="true">
          <ID>RealSubject</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>RealSubject</Default>
        </Literal>
        <Literal Editable="true">
          <ID>Proxy</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>Proxy</Default>
        </Literal>
        <Literal Editable="true">
          <ID>Request</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>Request</Default>
        </Literal>
      </Declarations>
      <Code Language="CSharp" Kind="type decl">
        <![CDATA[
    //$Subject$
    abstract class $Subject$ 
    {
        public abstract void $Request$();        
    }

    //$RealSubject$
    class $RealSubject$ : $Subject$
    {
        public override void $Request$()
        {
        }
    }

    //$Proxy$
    class $Proxy$ : $Subject$
    {
        $RealSubject$ realSubject;
        public override void $Request$()
        {
            // Use 'lazy initialization'
            if (realSubject == null)
            {
                realSubject = new $RealSubject$();
            }
            realSubject.$Request$();
        }    
    }

      ]]>
      </Code>
    </Snippet>
  </CodeSnippet>

  <CodeSnippet Format="1.0.0">
    <Header>
      <Title>State</Title>
      <Shortcut>dpstate</Shortcut>
      <Author>Khoder Elzein</Author>
      <Description>State Design Pattern</Description>
    </Header>
    <Snippet>
      <Declarations>
        <Literal Editable="true">
          <ID>State</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>State</Default>
        </Literal>
        <Literal Editable="true">
          <ID>ConcreteStateA</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>ConcreteStateA</Default>
        </Literal>
        <Literal Editable="true">
          <ID>ConcreteStateB</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>ConcreteStateB</Default>
        </Literal>
        <Literal Editable="true">
          <ID>Context</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>Context</Default>
        </Literal>
        <Literal Editable="true">
          <ID>Handle</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>Handle</Default>
        </Literal>
        <Literal Editable="true">
          <ID>Request</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>Request</Default>
        </Literal>
      </Declarations>
      <Code Language="CSharp" Kind="type decl">
        <![CDATA[
    //$State$
    abstract class $State$
    {
        public abstract void $Handle$($Context$ context);
    }

    //$ConcreteStateA$
    class $ConcreteStateA$ : $State$
    {
        public override void $Handle$($Context$ context)
        {
            context.$State$ = new $ConcreteStateA$();
        }
    }

    //$ConcreteStateB$ 
    class $ConcreteStateB$ : $State$
    {
        public override void $Handle$($Context$ context)
        {
            context.$State$ = new $ConcreteStateB$();
        }
    }

    //$Context$
    class $Context$
    {
        private $State$ state;

        // Constructor
        public $Context$($State$ state)
        {
            this.$State$ = state;
        }

        // Property
        public $State$ $State$
        {
            get{ return state; }
            set{ state = value;}
        }

        public void $Request$()
        {
            state.$Handle$(this);
        }
    }

      ]]>
      </Code>
    </Snippet>
  </CodeSnippet>

  <CodeSnippet Format="1.0.0">
    <Header>
      <Title>Strategy</Title>
      <Shortcut>dpstrategy</Shortcut>
      <Author>Khoder Elzein</Author>
      <Description>Strategy Design Pattern</Description>
    </Header>
    <Snippet>
      <Declarations>
        <Literal Editable="true">
          <ID>Strategy</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>Strategy</Default>
        </Literal>
        <Literal Editable="true">
          <ID>ConcreteStrategyA</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>ConcreteStrategyA</Default>
        </Literal>
        <Literal Editable="true">
          <ID>ConcreteStrategyB</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>ConcreteStrategyB</Default>
        </Literal>
        <Literal Editable="true">
          <ID>AlgorithmInterface</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>AlgorithmInterface</Default>
        </Literal>
        <Literal Editable="true">
          <ID>Context</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>Context</Default>
        </Literal>
        <Literal Editable="true">
          <ID>ContextInterface</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>ContextInterface</Default>
        </Literal>
      </Declarations>
      <Code Language="CSharp" Kind="type decl">
        <![CDATA[
    //$Strategy$
    abstract class $Strategy$
    {
        public abstract void $AlgorithmInterface$();
    }

    //$ConcreteStrategyA$
    class $ConcreteStrategyA$ : $Strategy$
    {
        public override void $AlgorithmInterface$()
        {
        }
    }

    //$ConcreteStrategyB$
    class $ConcreteStrategyB$ : $Strategy$
    {
        public override void $AlgorithmInterface$()
        {
        }
    }

    //$Context$ 
    class $Context$
    {
        $Strategy$ strategy;

        // Constructor
        public $Context$($Strategy$ strategy)
        {
            this.strategy = strategy;
        }

        public void $ContextInterface$()
        {
            strategy.$AlgorithmInterface$();
        }
    }

      ]]>
      </Code>
    </Snippet>
  </CodeSnippet>

  <CodeSnippet Format="1.0.0">
    <Header>
      <Title>Template</Title>
      <Shortcut>dptemplate</Shortcut>
      <Author>Khoder Elzein</Author>
      <Description>Template Design Pattern</Description>
    </Header>
    <Snippet>
      <Declarations>
        <Literal Editable="true">
          <ID>Strategy</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>Strategy</Default>
        </Literal>
        <Literal Editable="true">
          <ID>AbstractClass</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>AbstractClass</Default>
        </Literal>
        <Literal Editable="true">
          <ID>PrimitiveOperation1</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>PrimitiveOperation1</Default>
        </Literal>
        <Literal Editable="true">
          <ID>PrimitiveOperation2</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>PrimitiveOperation2</Default>
        </Literal>
        <Literal Editable="true">
          <ID>TemplateMethod</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>TemplateMethod</Default>
        </Literal>
      </Declarations>
      <Code Language="CSharp" Kind="type decl">
        <![CDATA[
    //$AbstractClass$
    abstract class $AbstractClass$
    {
        public abstract void $PrimitiveOperation1$();
        public abstract void $PrimitiveOperation2$();

        // The $TemplateMethod$
        public void $TemplateMethod$()
        {
            $PrimitiveOperation1$();
            $PrimitiveOperation2$();
        }
    }

    //ConcreteClassA
    class ConcreteClassA : $AbstractClass$
    {
        public override void $PrimitiveOperation1$()
        {
        }
        public override void $PrimitiveOperation2$()
        {
        }
    }
    
    //ConcreteClassB
    class ConcreteClassB : $AbstractClass$
    {
        public override void $PrimitiveOperation1$()
        {
        }
        public override void $PrimitiveOperation2$()
        {
        }
    }
      ]]>
      </Code>
    </Snippet>
  </CodeSnippet>

  <CodeSnippet Format="1.0.0">
    <Header>
      <Title>Visitor</Title>
      <Shortcut>dpvisitor</Shortcut>
      <Author>Khoder Elzein</Author>
      <Description>Visitor Design Pattern</Description>
    </Header>
    <Snippet>
      <Declarations>
        <Literal Editable="true">
          <ID>Visitor</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>Visitor</Default>
        </Literal>
        <Literal Editable="true">
          <ID>ConcreteVisitor1</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>ConcreteVisitor1</Default>
        </Literal>
        <Literal Editable="true">
          <ID>ConcreteVisitor2</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>ConcreteVisitor2</Default>
        </Literal>
        <Literal Editable="true">
          <ID>Element</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>Element</Default>
        </Literal>
        <Literal Editable="true">
          <ID>ConcreteElementA</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>ConcreteElementA</Default>
        </Literal>
        <Literal Editable="true">
          <ID>ConcreteElementB</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>ConcreteElementB</Default>
        </Literal>
        <Literal Editable="true">
          <ID>VisitConcreteElementA</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>VisitConcreteElementA</Default>
        </Literal>
        <Literal Editable="true">
          <ID>VisitConcreteElementB</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>VisitConcreteElementB</Default>
        </Literal>
        <Literal Editable="true">
          <ID>ObjectStructure</ID>
          <ToolTip>Replaces with name</ToolTip>
          <Default>ObjectStructure</Default>
        </Literal>

      </Declarations>
      <Code Language="CSharp" Kind="type decl">
        <![CDATA[
    //$Visitor$
    abstract class $Visitor$
    {
        public abstract void $VisitConcreteElementA$(
            $ConcreteElementA$ concreteElementA);
        public abstract void $VisitConcreteElementB$(
            $ConcreteElementB$ concreteElementB);
    }

    //$ConcreteVisitor1$
    class $ConcreteVisitor1$ : $Visitor$
    {
        public override void $VisitConcreteElementA$(
            $ConcreteElementA$ concreteElementA)
        {
        }

        public override void $VisitConcreteElementB$(
            $ConcreteElementB$ concreteElementB)
        {
        }
    }

    //$ConcreteVisitor2$
    class $ConcreteVisitor2$ : $Visitor$
    {
        public override void $VisitConcreteElementA$(
            $ConcreteElementA$ concreteElementA)
        {
        }

        public override void $VisitConcreteElementB$(
            $ConcreteElementB$ concreteElementB)
        {
        }
    }

    //$Element$
    abstract class $Element$
    {
        public abstract void Accept($Visitor$ visitor);
    }

    //$ConcreteElementA$
    class $ConcreteElementA$ : $Element$
    {
        public override void Accept($Visitor$ visitor)
        {
            visitor.$VisitConcreteElementA$(this);
        }
    }

    //$ConcreteElementB$
    class $ConcreteElementB$ : $Element$
    {
        public override void Accept($Visitor$ visitor)
        {
            visitor.$VisitConcreteElementB$(this);
        }
    }

    //$ObjectStructure$
    class $ObjectStructure$
    {
        private ArrayList elements = new ArrayList();

        public void Attach($Element$ element)
        {
            elements.Add(element);
        }

        public void Detach($Element$ element)
        {
            elements.Remove(element);
        }

        public void Accept($Visitor$ visitor)
        {
            foreach ($Element$ e in elements)
            {
                e.Accept(visitor);
            }
        }
    }
      ]]>
      </Code>
    </Snippet>
  </CodeSnippet>
  
</CodeSnippets>
Abgelegt unter Gang for Four, GOF, Design Patterns, Singleton, Facade, Observer.

3 Kommentare zum Snippet

infero schrieb am 11/26/2009:
Echt cool! Danke.
Kleiner Wermutstropfen: Die Datei hat einen Fehler und wird von VS nicht benutzt. Ganz unten sind zu viele Endtags eingefügt.
Khoder Elzein schrieb am 11/26/2009:
Hallo,

meine Datei hatte zwar das richtige Format beim Hochladen. Jedoch wird sie in einem anderen Format zum Download angeboten.
Daher mein Tipp:
Den Code oben kopieren, in eine Datei mit dem Namen designpatterns.snippet unter
"C:\Users\Elzein\Documents\Visual Studio 2008\Code Snippets\Visual C#\My Code Snippets" ablegen. Dann könnt Ihr gleich die Entwurftmuster in Ihrem code aufrufen.

Wünsche und Kommentare sind Willkommen.

Gruß
Khoder
Jan Welker schrieb am 11/26/2009:
Die Downloadfunktion hier auf dotnet-snippets.de ergänzt den Quellcode um die notwendigen XML Informationen.
Da dieser Snippet schon mit den XML Informationen veröffentlicht wurde, muss der Quellcode raus kopiert werden und als .snippet Datei abgespeichert werden, wie Khoder schon richtig gesagt hat.
 

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