C# - Dateien vergleichen

private bool FileCompare(string file1, string file2)
{
    int file1byte;
    int file2byte;
    FileStream fs1;
    FileStream fs2;
 
    if (file1 == file2)
    {
          return true;
    }
 
    fs1 = new FileStream(file1, FileMode.Open);
    fs2 = new FileStream(file2, FileMode.Open);
 
    if (fs1.Length != fs2.Length)
    {
          fs1.Close();
          fs2.Close();
 
          return false;
    }
 
    do 
    {
          file1byte = fs1.ReadByte();
          file2byte = fs2.ReadByte();
    }
    while ((file1byte == file2byte) && (file1byte != -1));
 
    fs1.Close();
    fs2.Close();
 
    return ((file1byte - file2byte) == 0);
}