Question
Make a second C# program to demonstrate validation of a pattern with a regular expression. Create a button to act as a credit card verifier
Make a second C# program to demonstrate validation of a pattern with a regular expression.
Create a button to act as a credit card verifier and add a textbox to the form for the user to type a credit card number for validation.
The code for this button should use a Regular Expression to test the value in the textbox. The valid format and range of values is: 4 sets of 4 digits separated by dashes, the leading digit in the first group cannot be 0, the second group of digits are each in the range of 1-3 [they are control numbers indicating the type of card.]
If the credit card number is not in a valid formatgive a message box or message in a label to the user that the number entered is not a valid card number. Otherwise give a message that the credit card number is in a valid format.
Example: 1234-1122-7474-1234 is a valid card number.
222-22-222, 0111-1111-1111-1111, and b123-5555-1111-1111 are not valid card numbers.
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