how to disable copy, Paste and delete features on a textbox using C#

Question

Can anybody please suggest how to handle Cut,Copy and Paste events on a Text Box in WinForms using C#?

Answer 1

In WinForms, the easiest way to disable cut, copy and paste features on a textbox is to set the ShortcutsEnabled property to false.

Answer 2

You'd have to subclass the textbox and then override the WndProc method to intercept the windows messages before the control does.

Here's an example that illustrates a TextBox that intercepts the WM_PASTE message.

And for reference, here's the definition of the message constants:

• WM_PASTE
• WM_COPY
• WM_CUT

You'd simply ignore the inbound message, like so:

protected override void WndProc(ref Message m) {    if (m.Msg == WM_PASTE || m.Msg == WM_COPY || m.Msg == WM_CUT)    {       // ignore input if it was from a keyboard shortcut       // or a Menu command    }    else    {       // handle the windows message normally       base.WndProc(ref m);    } }