How can you prevent pasting into a TextBox ?

[TerDavis]

Hi,

I have a textbox that i don't want users to be able to use the Ctrl-V (Paste) feature to enter information.

So, how do i prevent users from pasting text into a text box ?

Thanks,
Ter

 

[JurkMonkey]

Capture the Keydown event then check if V is being pressed with the Control modifier

txtBox1.KeyDown += blahblah

private void txtBox1_KeyDown(object sender, KeyEventArgs e)
{
if ((e.KeyData == Keys.V) && (e.Modifiers.Control))
{
e.Handled = true; //Cancel the keypress
}
}

 

[rdgerken]

You might have to trap the right click too? Just a thought.

 

[B00gyeMan]

Yes, you have to "trap" the mouse also.

Here's how you can do that:

ContextMenu aDummyCtxMenu = new ContextMenu();

aTextBox1.ContextMenu = aDummyCtxMenu;
aTextBox2.ContextMenu = aDummyCtxMenu;
aTextBox3.ContextMenu = aDummyCtxMenu;

(repeat for all the text boxes you need)