How to restrict special characters in textbox using regular expression in asp.net c#
In this article, we learn how to restrict special characters in textbox using regular expression validation in asp.net c#. We just need to put below validator expression in our regular expression validation.
As we have seen in our last article, how to restrict some special characters intextbox using regular expression in asp.net c#
ValidationExpression="^[\sa-zA-Z0-9]*$"
Source code:-
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="specialtextbox.aspx.cs" Inherits="specialtextbox" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<asp:TextBox runat="server" ID="txtname" />
<asp:RegularExpressionValidator runat="server" ControlToValidate="txtname"
ForeColor="Red" SetFocusOnError="true" Display="Dynamic"
ErrorMessage=" Restrict for special characters" ID="rfvname"
ValidationExpression="^[\sa-zA-Z0-9]*$">
</asp:RegularExpressionValidator>
</form>
</body>
</html>
Out-put:-
How to restrict special characters in textbox using regular expression in asp.net c#
Reviewed by NEERAJ SRIVASTAVA
on
9:17:00 PM
Rating:
Reviewed by NEERAJ SRIVASTAVA
on
9:17:00 PM
Rating:
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