Email Validation
I searched the internet and I found that one of the common questions is how I can validate users email address from code behind.
So In this tutorial I will show you how you can easily validate email address from code behind Using Regular Expression .
For example add one textbox to your page with id=”txtEmail” , add one label with id=”lblResult” and add one button, Add this code to the button onclick event:
string pattern = @"\w+([-+.']\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*";
Match match = Regex.Match(txtEmail.Text.Trim(), pattern, RegexOptions.IgnoreCase);
if (match.Success)
lblResult.Text = "Valid";
else
lblResult.Text = "Not Valid";
Don’t forget to add a namespace to the top of the code behind page:
using System.Text.RegularExpressions;
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