Function: Regular expression application verification login (C # learning Diary 2017-09-22) __ Regular Expressions

Note : The use of regular expressions for logon verification or input information validation, very convenient.

namespaces: System.Text.RegularExpressions

Case:

  The regular expression   contains the number 0-9 uppercase and lowercase letters, 8 to 16-bit length
            regex regular = new Regex ("^[a-za-z0-9-]{8,16}$");

            Determines whether a regular expression of
            if (!regular) is met. IsMatch (Strbarcode))
            {
                showerror ("Please enter the barcode or order number in the correct format");
                return;
            }
        

Follow-up to add