Disable Alt+F4 and Esc in VB.net application

Question

i am using global function to disable alt+F4 and Esc Esc is working but alt is not working. pls help protected override bool ProcessCmdKey(ref Message msg Keys keyData) { if (keyData == Keys.Escape) { MessageBox.Show(sorry you cannot close this form via Esc!!!); return true; } else if (keyData == Keys.Alt) { MessageBox.Show(sorry you cannot close this form via Esc!!!); return true; } return base.ProcessCmdKey(ref msg keyData); }

Manoj Bhoir · Answer

Hi In your Question you said it's VB.Net Application. But code you provided look like C# Code. Try this for VB.Net Application : Public Class Form1 Private Sub Form1_KeyDown(sender As Object  e As KeyEventArgs ) Handles Me .KeyDown If e.KeyData = Keys .Alt + Keys .F4 Then MessageBox .Show( Sorry you cannot close this form via Alt+F4!!!  Security  MessageBoxButtons .OK MessageBoxIcon .Exclamation) e.Handled = True ElseIf e.KeyData = Keys .Escape Then MessageBox .Show( Sorry you cannot close this form via Escape!!!  Security  MessageBoxButtons .OK MessageBoxIcon .Exclamation) e.Handled = True End If End Sub End Class