Solved

RegularExpression for Numbers with no decimal points in ASP.net text control

Posted on 2016-11-08
11
63 Views
Last Modified: 2016-11-09
What is the ValidationExpression to be used for a ASP.net text box  control to ensure only whole numbers are accepted (0 to 9) without any decimals?

I am using the following ValidationExpression

"^[0-9]+$"
0
Comment
Question by:Member_2_7967119
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 5
  • 3
  • 3
11 Comments
 
LVL 51

Expert Comment

by:Rgonzo1971
ID: 41878256
Hi,

I think it's fine, do you want thousand separators
Shorter
"^\d+$"

Open in new window


Regards
0
 
LVL 29

Accepted Solution

by:
Pawan Kumar earned 500 total points
ID: 41878331
You need below if (  Regex.IsMatch("12345", @"^[0-9]*$" ))

 if (  Regex.IsMatch("12345", @"^[0-9]*$" ))
                
                 Console.WriteLine("match - [0-9]");
            
 else            
                
                Console.WriteLine("Other");

Open in new window


Hope it helps!!
0
 
LVL 51

Expert Comment

by:Rgonzo1971
ID: 41878338
I wouldn' t use
@"^[0-9]*$"

since it matches empty strings
0
Technology Partners: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

 
LVL 29

Expert Comment

by:Pawan Kumar
ID: 41878340
Thank you Rgonzo1971. I think user will not be allowed to click on the submit button in that case. We can also use below if thats the issue.

            string str = "";
            if ( str.Length > 0 && Regex.IsMatch(str, @"^[0-9]*$" ))
                
                 Console.WriteLine("match - [0-9]");
            
            else            
                
                Console.WriteLine("Other");

Open in new window

0
 

Author Comment

by:Member_2_7967119
ID: 41880462
^\d+$ fails since it allows empty space. I want only whole numbers without decimals to go through. Thanks.
0
 
LVL 29

Expert Comment

by:Pawan Kumar
ID: 41880463
Hi Author,
Have you tried mine code?

Regards,
Pawan
0
 
LVL 51

Expert Comment

by:Rgonzo1971
ID: 41880478
Cannot replicate your error
        string str = "";
        if ( Regex.IsMatch(str, @"^\d+$"))

            Console.WriteLine("match - [0-9]");

        else

            Console.WriteLine("Other");

Open in new window

0
 

Author Comment

by:Member_2_7967119
ID: 41881683
Pawan,

^[0-9]*$ does work. Thank you
0
 
LVL 29

Expert Comment

by:Pawan Kumar
ID: 41881687
Can you provide us few sample strings you are using ?
0
 

Author Closing Comment

by:Member_2_7967119
ID: 41881688
Thank you for your help.
0
 
LVL 29

Expert Comment

by:Pawan Kumar
ID: 41881689
ohh !! Great ..
0

Featured Post

Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This article discusses the ASP.NET AJAX ModalPopupExtender control. In this article we will show how to use the ModalPopupExtender control, how to display/show/call the ASP.NET AJAX ModalPopupExtender control from javascript, how to show/display/cal…
Sometimes in DotNetNuke module development you want to swap controls within the same module definition.  In doing this DNN (somewhat annoyingly) swaps the Skin and Container definitions to the default admin selections.  To get around this you need t…
In this video we outline the Physical Segments view of NetCrunch network monitor. By following this brief how-to video, you will be able to learn how NetCrunch visualizes your network, how granular is the information collected, as well as where to f…
Michael from AdRem Software outlines event notifications and Automatic Corrective Actions in network monitoring. Automatic Corrective Actions are scripts, which can automatically run upon discovery of a certain undesirable condition in your network.…

726 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question