How to Find a string contains mail ID or mobile number?

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My Button CLick Event:

C#

private void button1_Click(object sender, EventArgs e)
       {
           string objrb = string.Empty;
           objrb = richTextBox1.Text;
           string Msg = string.Empty;
           DateTime now = DateTime.Now;
           objService.CHAT_SEND_MESSAGE(Sender_ID, receiver_id, objrb, now, out Msg);
           Chat = richTextBox2.Text;
           if (Chat != string.Empty)
           {
               richTextBox2.Text = Chat + Tutor_Name + " : " + objrb + Environment.NewLine; ;
           }
           richTextBox1.Text = string.Empty;
       }

Solution Need:
how to check whether the string which is typed in richtextbox1 containing email id and mobile number and to display a message box and to count the number of attempts the same user trying?

Posted 4-Jun-13 21:15pm

riodejenris14

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Comments

Rockstar_ 5-Jun-13 3:18am

User will enter only email ID or phone number or both?

riodejenris14 5-Jun-13 3:20am

both rockstar!!! in richtextbox before sending to DB i have to check and send.

Prasad Khandekar 5-Jun-13 4:32am

Hello Muhammed,

How a user is expected to enter this information in richtextbox

1. email;mobile
2. mobile;email
3. emailCrLfmobile
4. mobileCrLfemail

Also what would be the format for mobile number is it going to be internal format (Country Code + Network Prefix + Mobile Number)?

Regards,

1 solution

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tumbledDown2earth · Accepted Answer · 2013-06-05T23:08:00

C#

var email = "your@email.com";
Regex regex = new Regex(@"^[\w!#$%&'*+\-/=?\^_`{|}~]+(\.[\w!#$%&'*+\-/=?\^_`{|}~]+)*"
+ "@"
+ @"((([\-\w]+\.)+[a-zA-Z]{2,4})|(([0-9]{1,3}\.){3}[0-9]{1,3}))$");
Match match = regex.Match(email);
if (match.Success)
    Console.Write("correct");

for phone number use the pattern:

C#

string pattern = @"
^                  # From Beginning of line
(?:\(?)            # Match but don't capture optional (
(?<areacode>\d{3}) # 3 digit area code
(?:[\).]?)         # Optional ) or .
(?<prefix>\d{3})   # Prefix
(?:[-\.]?)         # optional - or .
(?<suffix>\d{4})   # Suffix
(?!\d)             # Fail if eleventh number found";
</suffix></prefix></areacode>

Source[^]