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i am sending a mail for this i am entering text in multipletextbox . how to find whether any
email address or mobilenumber is exists in multilinetextbox or not. on click event of sendmail button. please tell me any one.

Thanks
Posted 11-Feb-13 4:17am

1 solution

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Solution 1

You can't check if an email address exists (in the sense that any message sent to it can be read) in any way other than to send a message to it and see if you get a reply.
You can however check if there is a valid email address in the textbox:
public static Regex regex = new Regex(
      "([a-zA-Z0-9_\\-\\.]+)@((\\[[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1"+
      ",3}\\.)|(([a-zA-Z0-9\\-]+\\.)+))([a-zA-Z]{2,4}|[0-9]{1,3})",
    RegexOptions.IgnoreCase
    | RegexOptions.CultureInvariant
    | RegexOptions.IgnorePatternWhitespace
    | RegexOptions.Compiled
    );

Match m = regex.Match(myTextBox.Text);
if (m.Success)
   {
   // OK
   }
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Comments
Edo Tzumer at 11-Feb-13 9:33am
   
5+
Maciej Los at 11-Feb-13 10:05am
   
+5!

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

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