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I have a textbox, and the user should not be able to paste any data in it.

How can I achieve that?

Thanks in advance
Posted
Updated 4-Jun-10 3:12am
v3
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Johnny J. 4-Jun-10 8:12am
   
I assume that he SHOULD be able to write in it? Otherwise just set it to ReadOnly
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Solution 2

Why would you want to prevent paste, but allow typing?
If an App did that to me, then I would probably be quite annoyed.

If you really must, then derive a class from textbox, and override WndProc. You can then filter the WM_PASTE message, and disregard it. That should do it.
public class myTextBox : TextBox
    {
    private const int WM_PASTE = 0x302;
    protected override void WndProc(ref Message m)
        {
        if (m.Msg != WM_PASTE)
            {
            base.WndProc(ref m);
            }
        }
    }

I still think it's a bad idea though...
   
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Solution 3

Another method you may want to check is to set the property ShortcutsEnabled to false. Although that will disable both pasting and copying, and presumably any other short-cuts you can think of.

Otherwise as OriginalGriff said, I'd check for the WM_PASTE message. It's a lot more robust than checking the key presses and disabling the context menu.
   

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