How to restrict the special characters being entered in textbox (ASP.NET, c#.net, jquery).

Question

1.00/5 (1 vote)

See more:

, +

Hi 
How to restrict the special characters being entered in textbox (ASP.Net, C#.Net, jQuery).
My Current Validation is working as expected [when user types in textbox],
 but the problem is it’s getting failed when user Copy Special Characters (#,{,},|) and Paste into the textbox then it’s not working. 
How can I prevent the user to Type/Copy Paste Special Characters into my Textbox?

Please assist me. 
Thanks.

What I have tried:

My Current Validation is working as expected [when user types in textbox],
but the problem is it’s getting failed when user Copy Special Characters (#,{,},|) and Paste into the textbox then it’s not working.

Posted 14-Aug-17 8:39am

Yugesh Naid

Updated 15-Aug-17 7:36am

Add a Solution

Comments

BillWoodruff 14-Aug-17 14:58pm

What are you doing now when a paste is done ? Anything ? In WinForms you can use a MaskedTextBox for this. Foe ASP,NET.JQuery, possibly this mifht be useful:

https://stackoverflow.com/questions/3096100/i-need-masked-textbox-in-asp-net

Kornfeld Eliyahu Peter 15-Aug-17 1:14am

How do you handle user input? Events? 3rd party? Do you looking for 'paste' event?

1 solution

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)

Mahesh Pratap Singh · Answer 1 · 2017-08-15T07:36:00

Yugesh, try this:

$("#txtBoxId").bind("paste", function(e){    
    var pastedText = e.originalEvent.clipboardData.getData('text');
    validate(pastedText);
} );

Remember this time in validate function you have to validate whole pasted data for any special character presence.

Hope it helps.