Disable the Alt+Tab,Alt+Esc,Ctrl+Esc,Ctrl+Alt+del through C# program.....Please help me!!!!!!!!!

Dear Friends,
How do I Disable the Alt+Tab,Alt+Esc,Ctrl+Esc,Ctrl+Alt+del through C# program?
I am new to C# programming...If any one knows please let me know.... code or tips are always welcome

Advance thanks...


Thanks,
Sharmili


I have pasted vb.Net code...i don't know how to convert vb.net to C#..If any one know please help me .. This is not included (Ctrl+Alt+Del)

Public Class frmMain
    Inherits System.Windows.Forms.Form

    Declare Function SetWindowsHookEx Lib "user32" Alias "SetWindowsHookExA" (ByVal idHook As Integer, ByVal lpfn As LowLevelKeyboardProcDelegate, ByVal hMod As Integer, ByVal dwThreadId As Integer) As Integer
    Declare Function UnhookWindowsHookEx Lib "user32" Alias "UnhookWindowsHookEx" (ByVal hHook As Integer) As Integer
    Delegate Function LowLevelKeyboardProcDelegate(ByVal nCode As Integer, ByVal wParam As Integer, ByRef lParam As KBDLLHOOKSTRUCT) As Integer
    Declare Function CallNextHookEx Lib "user32" Alias "CallNextHookEx" (ByVal hHook As Integer, ByVal nCode As Integer, ByVal wParam As Integer, ByRef lParam As KBDLLHOOKSTRUCT) As Integer

    Const WH_KEYBOARD_LL = 13

    Structure KBDLLHOOKSTRUCT
        Dim vkCode As Integer
        Dim scanCode As Integer
        Dim flags As Integer
        Dim time As Integer
        Dim dwExtraInfo As Integer
    End Structure

    Dim intLLKey As Integer

Private Sub frmMain_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        intLLKey = SetWindowsHookEx(WH_KEYBOARD_LL, AddressOf LowLevelKeyboardProc, System.Runtime.InteropServices.Marshal.GetHINSTANCE(System.Reflection.Assembly.GetExecutingAssembly.GetModules()(0)).ToInt32(), 0)
    End Sub

    Private Sub frmMain_Closing(ByVal sender As Object, ByVal e As System.ComponentModel.CancelEventArgs) Handles MyBase.Closing
        UnhookWindowsHookEx(intLLKey)
    End Sub

    Private Function LowLevelKeyboardProc(ByVal nCode As Integer, ByVal wParam As Integer, ByRef lParam As KBDLLHOOKSTRUCT) As Integer
        Dim blnEat As Boolean = False

        Select Case wParam
            Case 256, 257, 260, 261
                'Alt+Tab, Alt+Esc, Ctrl+Esc, Windows Key
                blnEat = ((lParam.vkCode = 9) AndAlso (lParam.flags = 32)) Or _
                ((lParam.vkCode = 27) AndAlso (lParam.flags = 32)) Or _
                ((lParam.vkCode = 27) AndAlso (lParam.flags = 0)) Or _
                ((lParam.vkCode = 91) AndAlso (lParam.flags = 1)) Or _
                ((lParam.vkCode = 92) AndAlso (lParam.flags = 1))
        End Select

        If blnEat = True Then
            Return 1
        Else
            Return CallNextHookEx(0, nCode, wParam, lParam)
        End If
    End Function
    Friend WithEvents lblInfo As System.Windows.Forms.Label
End Class