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Regular Expression to validate URL

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ASP.NET  : Regular expression to validate URL.


Regex reg = new Regex(@"@"^(?:ftp|http|https):\/\/(?:[\w\.\-\+]+:{0,1}[\w\.\-\+]*@)?(?:[a-z0-9\-\.]+)(?::[0-9]+)?(?:\/|\/(?:[\w#!:\.\?\+=&%@!\-\/\(\)]+)|\?(?:[\w#!:\.\?\+=&%@!\-\/\(\)]+))?$");
Response.Write(reg.IsMatch(txtwebsite.Text));

string

 regURL = @"^(?:ftp|http|https):\/\/(?:[\w\.\-\+]+:{0,1}[\w\.\-\+]*@)?(?:[a-z0-9\-\.]+)(?::[0-9]+)?(?:\/|\/(?:[\w#!:\.\?\+=&%@!\-\/\(\)]+)|\?(?:[\w#!:\.\?\+=&%@!\-\/\(\)]+))?$";




if (Regex.IsMatch(txtwebsite.Text, regURL))
{
// string match with regExpression.
}
Else
{
//String does not validate
}
 
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