C# - Kanonischer Pfad

static string GetCanonicalPath (string file)
{
     try
            {
                file = file.Replace(@"\", "/");
                return "file:///" + file;
            }
            catch (System.Exception ex)
            {
                throw ex;
            }
}

static string GetAbsoluteFromCanonicalPath(string file)
{
try
            {
                file = file.Replace("/", @"\");

                return (file.Substring(8));

            }
            catch (System.Exception ex)
            {
                throw ex;
            }
}