How to Validate the FAX No
  • Hi Clever coders today i have found how to validate the FAX Number
    i hope it will use your Great code

    Regex regex = new Regex("^[0-9]*$");
                if (!regex.IsMatch(FaxtxtBox.Text))
                    MessageBox.Show("Only numbers may be entered here");
                    FaxtxtBox.Text = "";

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