[RESOLVED] Input number in the textbox

I want allow the decimal number or interger can be input in the textbox.No String data are allowed to be input in the textbox. I try to avoid the error input by the user using

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. I used desktop computer to input the value from Keyboard. Is there a difference code between input the value from keyboard for desktop computer and notebook?

No difference. But if you want a good way of doing this have a look at Martin Liss' signature for the textbox control.

Also look at IsNumber() function in my signature. It may help.

There are also a whole lot of threads on this subject as this is a fairly common question. A search should turn up a wealth of information for you.