Need help with Programming (vb.Net)?

-Hai guys. i need some help with my project!

So i'm having some problems with my textbox

i want that the textbox only has "az"-"AZ"-"@" characters (alphabet + "@")



so what i tried was this:

TextBox15.Text = Replace(TextBox15.Text, "禄", "")



but the problem is that there are a ton sh!t of special characters on a pc (鈼︹棅飥嗏暊鈺?for example)

and i don't wanna copy that line (replace function ) over and over a million times













> So the only allowed characters are here:

qwertyuiopasdfghjklzxcvbnmQWERTYUIOPAS鈥?@