textbox allow only letters

Question

I need some help with a textbox:

The textbox is only allowed to contain letters. how do I do this?

Answer 1

Check here : How to make Textbox only accept alphabetic characters, there are some different approached to choose from.

Edit: I see on the tags that we are talking asp.net, which the question I mentioned discusses the problem from a WinForms perspective. Might be that you want to do something similar using the onKeyPress event in JavaScript instead.

This article on w3schools.com contains an example code that may do exactly what you are looking for.