Question

I am using a rich text box to enter some variables.
I am restricting the user from entering some special characters.
But user is able to enter the same values by copying from a notepad and pasting it in text box.
How can I restrict the user from doing so?

Thanks,
Naresh

Answer 1

Hi to prevent pasting from clipboard in the KeyDown event handler you can check if Ctrl was pressed and if so you set e.handled to true. this should work 🙂