Validation ASP.Net Tutorial

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<%@ Page Language="C#" %>



    Regular Expression Tester


    
    

    
        Web Site URL:
        
                      runat="server" 
           ControlToValidate="txtUrl" 
           ValidationExpression="^((http|https)://)?([\w-]+\.)+[\w]+(/[\w- ./?]*)?$"
           Text="Enter a valid URL" />