ASP.net numeric validation

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C#

ASP.NET

please any one provide me the c# code for numeric validation.

Posted 16-May-11 3:25am

rahul dev123

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Pratik Bhesaniya 16-May-11 9:30am

What kind of validation you want ?

Programm3r 16-May-11 9:35am

You'll have to be more specific!

Sandeep Mewara 16-May-11 10:26am

No effort

2 solutions

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OriginalGriff · Answer 1 · 2011-05-16T03:37:00

Solution 1

Try:

int i;
if (!Int.TryParse(myStringToValidate, out i))
   {
   // Failed validation
   }

Posted 16-May-11 3:37am

OriginalGriff

Comments

Manfred Rudolf Bihy 16-May-11 9:41am

I was going to post something along the lines. :) 5+

Sergey Alexandrovich Kryukov 16-May-11 21:08pm

As simple as that, my 5.
--SA

Programm3r · Answer 2 · 2011-05-16T03:40:00

Hi,

If it's number validation that your referring to, when have a look at the following blog post: Numeric validation in Textbox using regular expressions

From the blog post:

Only numbers can enter into that Textbox
We can use Regular expression validator for this:
Assign the following value to the validation expression property: ^\d+$

<asp:TextBox ID="TextBox1" runat="server" Style="z-index: 100; left: 259px; position: absolute;
top: 283px" ValidationGroup="check">

<asp:RegularExpressionValidator ID="RegularExpressionValidator1" runat="server" ControlToValidate="TextBox1"
ErrorMessage="Please Enter Only Numbers" Style="z-index: 101; left: 424px; position: absolute;
top: 285px" ValidationExpression="^\d+$" ValidationGroup="check">

Kind regards,