restrict use of Text Box control in Vb.net

Question

0.00/5 (No votes)

See more:

I want that user should enter only numbers in the text box not alphabets. how can i check that user enter only number in the textbox programatically. or how can I stop users to enter alphabets in the text box. I will appreciate your help.

Posted 9-Feb-11 6:28am

juli Paris

Add a Solution

Comments

Nish Nishant 9-Feb-11 12:34pm

Winforms or WPF?

2 solutions

Solution 2

hi,
Better think is u can try to make a usercontrol. because if validate that think(only numeric) in onkeydown( this is also wrong, use onkeypress) then you must write that validation code in every textbox keypress. But you will make a user control for numeric textbox
then u can use any ware in your project. this is only good. and its easy also.

just add a new item, choose user control and drag a text box then write this code http://msdn.microsoft.com/en-us/library/ms229644.aspx . finally build your project, this textbox will come on toolbox. jst use and enjoy

Posted 10-Feb-11 4:42am

sat80890

Updated 10-Feb-11 4:43am

v2

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Sandeep Mewara · Accepted Answer · 2011-02-09T06:33:00

Solution 1

Since you have tagged it as VB.NET, I assume you are taking of Winforms.

Now, all you need is to tie a OnKeyDown event to the textbox. In code behind, at runtime, whenever a key is pressed, OnKeyDown method would be invoked. In it, check for the key stroke and accordingly decide if you want to allow it or not.

If needed, have a look at similar discussion here[^].

Posted 9-Feb-11 6:33am

Sandeep Mewara

Comments

juli Paris 9-Feb-11 12:35pm

Thank you sir, This simple thing will solve my problem.

Sandeep Mewara 9-Feb-11 12:38pm

Good to know. :)

Henry Minute 9-Feb-11 12:49pm

If someone helps you to solve a problem you should vote them a 5 as well as marking their answer as the solution.

It's only polite to do so. :)

Sergey Alexandrovich Kryukov 9-Feb-11 12:52pm

All right, my 5, but how to make them Google, Google..?
Poor Internet gets blotted by repeated answers like that, going to blow soon...
--SA

Sandeep Mewara 9-Feb-11 12:54pm

:-)

Just felt, OP sounded orignal and needed. So, all good. :)