In asp.net for textbox I want to type only numbers not character.how to validate.

Use RegularValidationExpression control
and set the property as ValidationExpression="^[0-9]*$"

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Hi Narasiman,

<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="Number_Chracter_validation._Default" %>

    Untitled Page




Thanks

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Jignesh Trivedi14y ago

hi,

if you want to validate only numeric value then you can use RegularExpressionValidator control to validate the text box.

   ErrorMessage="Allow only numeric"
   ControlToValidate="txtNo"
   ValidationExpression="^[0-9]*$">

Also refer
http://msdn.microsoft.com/en-us/library/eahwtc9e.aspx
Hope this will help you.

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14y ago

Don't post duplicate questions.

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Santhosh Kumar Jayaraman14y ago

Please see the attached soln.

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