كود سي# محول من VB ولا يعمل

???Please include more info, post the VB.net code as well as what's supposed to be done with this code

ADEL,

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using System.Runtime.InteropServices;

namespace WindowsApplication1
{

	/// <summary>
	/// Summary description for Form1.
	/// </summary>
	public class frmMain : System.Windows.Forms.Form 
	{ 
  [STAThread]
  public static void Main()
  {
 	 Application.Run( new frmMain() );
  }
  
  const int WH_KEYBOARD_LL = 13;
  delegate int LowLevelKeyboardProcDelegate(int nCode, int wParam, ref KBDLLHOOKSTRUCT lParam); 
  
  [DllImport("user32", EntryPoint="SetWindowsHookExA")] 
  extern static int SetWindowsHookEx(int idHook, LowLevelKeyboardProcDelegate lpfn, int hMod, int dwThreadId); 
  [DllImport("user32", EntryPoint="UnhookWindowsHookEx")] 
  extern static int UnhookWindowsHookEx(int hHook); 
  [DllImport("user32", EntryPoint="CallNextHookEx")] 
  extern static int CallNextHookEx(int hHook, int nCode, int wParam, ref KBDLLHOOKSTRUCT lParam); 
  struct KBDLLHOOKSTRUCT 
  { 
 	 public int vkCode; 
 	 public int scanCode; 
 	 public int flags; 
 	 public int time; 
 	 public int dwExtraInfo; 
  } 
  int intLLKey; 

  public frmMain() 
  { 
 	 InitializeComponent(); 
  } 

  protected override void Dispose(bool disposing) 
  { 
 	 if (disposing) 
 	 { 
    if (!(components == null)) 
    { 
   	 components.Dispose(); 
    } 
 	 } 
 	 base.Dispose(disposing); 
  } 
  private System.ComponentModel.IContainer components; 

  [System.Diagnostics.DebuggerStepThrough()] 
  private void InitializeComponent() 
  { 
 	 this.lblInfo = new System.Windows.Forms.Label();
 	 this.SuspendLayout();
 	 // 
 	 // lblInfo
 	 // 
 	 this.lblInfo.Location = new System.Drawing.Point(16, 16);
 	 this.lblInfo.Name = "lblInfo";
 	 this.lblInfo.Size = new System.Drawing.Size(216, 88);
 	 this.lblInfo.TabIndex = 0;
 	 this.lblInfo.Text = "Alt-Tab, Alt-Esc, Ctrl-Esc, and the Windows key are disabled. Ctrl-Alt-Del and Al" +
    "t-F4 are still enabled. Close the application to reset the keyboard. While this " +
    "program is running, the low-level keyboard effect is global.";
 	 // 
 	 // frmMain
 	 // 
 	 this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
 	 this.ClientSize = new System.Drawing.Size(248, 118);
 	 this.Controls.Add(this.lblInfo);
 	 this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedDialog;
 	 this.MaximizeBox = false;
 	 this.MinimizeBox = false;
 	 this.Name = "frmMain";
 	 this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
 	 this.Text = "LowLevel Keyboard Hook";
 	 this.Closing += new System.ComponentModel.CancelEventHandler(this.frmMain_Closing);
 	 this.Load += new System.EventHandler(this.frmMain_Load);
 	 this.ResumeLayout(false);

  } 

  private void frmMain_Load(object sender, System.EventArgs e) 
  { 
 	 intLLKey = SetWindowsHookEx(WH_KEYBOARD_LL, /* might be wrong, please check */ new LowLevelKeyboardProcDelegate(LowLevelKeyboardProc), System.Runtime.InteropServices.Marshal.GetHINSTANCE(System.Reflection.Assembly.GetExecutingAssembly().GetModules()[0]).ToInt32(), 0); 
  } 

  private void frmMain_Closing(object sender, System.ComponentModel.CancelEventArgs e) 
  { 
 	 UnhookWindowsHookEx(intLLKey); 
  } 

  private int LowLevelKeyboardProc(int nCode, int wParam, ref KBDLLHOOKSTRUCT lParam) 
  { 
 	 bool blnEat = false; 
 	 if (wParam == 256 || wParam == 257 || wParam == 260 || wParam == 261) 
 	 { 
    blnEat = ((lParam.vkCode == 9) && (lParam.flags == 32)) | ((lParam.vkCode == 27) && (lParam.flags == 32)) | ((lParam.vkCode == 27) && (lParam.flags == 0)) | ((lParam.vkCode == 91) && (lParam.flags == 1)) | ((lParam.vkCode == 92) && (lParam.flags == 1)); 
 	 } 
 	 if (blnEat == true) 
 	 { 
    return 1; 
 	 } 
 	 else 
 	 { 
    return CallNextHookEx(0, nCode, wParam, ref lParam); 
 	 } 
  } 
  internal System.Windows.Forms.Label lblInfo; 
	}

}