using custom validator to validate an regular expression

its all right. if any problem feel free to ask. and make the answer as answered

hi Manjula,
 i written below code according to your requirement plz chek this


   
   


   

   

       
                    OnServerValidate="ServerValidate" ControlToValidate="txtEmail" ValidateEmptyText="true"
            ErrorMessage="Please Enter Valid EmailId" ForeColor="Red">
       
   

   

and below .cs code


using System.Configuration;

public partial class Custom_validator : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {

    }
    protected void ServerValidate(object source, ServerValidateEventArgs args)
    {
        RegexStringValidator r = new RegexStringValidator(@"\w+([-+.']\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*");
        try
        {
            r.Validate(args.Value);
            args.IsValid = true;
        }
        catch (ArgumentException ee)
        {
            ee.Message.ToString();
            args.IsValid = false;
        }
    }
    protected void Button1_Click(object sender, EventArgs e)
    {
        if (Page.IsValid)
        {

        }
    }
}

plz check this  and reply

 sir,
 but i want to use customvalidator only how to generate OnServerValidate propertie by using regular expression with emailid

Try this javascript Code to validate email

if (emailid == null || x == "") {
document.getElementById("LabelValidateEmail").innerHTML = "Email Required";
count++;
}
else {
alphaExp = /^[\w\.=-]+@[\w\.-]+\.[\w]{2,3}$/; //regular expression of a valid email address
if (!x.match(alphaExp)) {

document.getElementById("LabelValidateEmail").innerHTML = "Check the Email format";
count++;
} else {
document.getElementById("LabelValidateEmail").innerHTML = "";
}