VB: Allowing Only Numbers (not Letters) To Be Entered Into Textbox

Question

I have a textbox which controls the interval of a Timer control. How do I filter out letters? Is it possible to restrict entry to numbers only (like if you enter a letter or a space, nothing happens)? Is there a property of the textbox that can accomplish this? Thanks!

Answer 1

Is replacing the textbox with another control an option? In my experience I found the NumericUpDown control easier to work with if you want to restrict input to numeric values only.

It also has cute up and down arrows, but best of all, it requires no extra code.