C#

using System;
using System.Runtime.InteropServices;

[
  GuidAttribute("4657278A-411B-11d2-839A-00C04FD918D0"),
  ClassInterface(ClassInterfaceType.None),
  ComImport
]
public class DragDropHelper : IDropTargetHelper, IDragSourceHelper
{
}

[
  GuidAttribute("4657278B-411B-11d2-839A-00C04FD918D0"),
  InterfaceType(ComInterfaceType.InterfaceIsIUnknown),
  ComImport
]
public interface IDropTargetHelper
{
}

[
  GuidAttribute("DE5BF786-477A-11d2-839D-00C04FD918D0"),
  InterfaceType(ComInterfaceType.InterfaceIsIUnknown),
  ComImport
]
public interface IDragSourceHelper
{
}

class Test
{
  static void Main()
  {
    DragDropHelper helper = new DragDropHelper();

    IDropTargetHelper dropHelper = (IDropTargetHelper)helper;
    IDragSourceHelper dragHelper = (IDragSourceHelper)helper;

    Console.WriteLine(dropHelper == null);
    Console.WriteLine(dragHelper == null);
  }
}

private void button_Click(object sender, EventArgs e)
{
    OtherWindow other = new OtherWindow();
    other.Show();
}

if(string == "something"){ }

string s = "Nick";
if(string.Compare(s, "Nick") == 0)
    {
    //...
    }

CultureInfo ci = new CultureInfo("ar");
int codepage = ci.TextInfo.ANSICodePage;

Encoding enc = Encoding.GetEncoding(0x04e8);
byte[] buffer = enc.GetBytes(yourFarsiString);
foreach (byte b in buffer)
  Console.Write(b.ToString("x2"));
Console.WriteLine();

using System;
using System.Globalization;
using System.Text;
 
class Test
{
  static void Main()
  {
    CultureInfo ci = new CultureInfo("ar");
    int codepage = ci.TextInfo.ANSICodePage;
    Console.WriteLine("Using codepage 0x{0:x4}", codepage);
 
    string str = "\ufeed\ufee0\ufe8e\ufeeb";
    Console.WriteLine("Decoding " + str);
 
    Encoding enc = Encoding.GetEncoding(codepage);
    byte[] buffer = enc.GetBytes(str);
    foreach (byte b in buffer)
      Console.Write("0x{0:x2} ", b);
 
    Console.WriteLine();
  }
}

byte[] ubuf = Encoding.Unicode.GetBytes(c.ToString());<br />
Encoding enc = Encoding.GetEncoding(1256);<br />
byte[] abuff = Encoding.Convert(Encoding.Unicode, enc, ubuf);

// Here I get ASCII of my Char 'س' Unicode 1587<br />
// Create two different encodings.<br />
Encoding ascii = Encoding.ASCII;<br />
Encoding enc = Encoding.GetEncoding(1256);<br />
<br />
byte[] asciiBytes = enc.GetBytes("س");

char[] asciiChars = new char[ascii.GetCharCount(unicodeBytes, 0, unicodeBytes.Length)];<br />
ascii.GetChars(unicodeBytes, 0, unicodeBytes.Length, asciiChars, 0);<br />
string asciiString = new string(asciiChars);