Design and develop a program that validates the value a user enters into a TextBox control to ensure that the entry is a valid telephone number. The application should accept a maximum of 12 characters. When the user clicks a button, the program should determine if the entry is of the form **999-999-9999**, where the character 9 represents any number.
If the entry is determined to be a telephone number, display an appropriate message, along with the separate substrings that compose the telephone number without the dashes. If the entry is not a telephone number, then display a message as to the reason why the entry is not a valid telephone number, clear the TextBox control and set focus to the TextBox control. Use String class methods to solve the problem.
You don’t have to use loops (you can if you want to), but you have to use the if-then-else statement
**Need entire vb.net project folder (zipped) - not just .exe
**also needs comments in code telling what certain sections are there for, or what function is.
Here are a few hints to help you code the String methods:
1. Check that the user has entered two dashes in the appropriate spaces.
2. Break the string into 3 substrings, represented as 999,999, and 9999.
3. Use the functions **IsNumeric()** and **ToInt32(String)** to help you solve the problem.
Need entire project folder zipped, not just .exe