Chapter 4.LA, Problem 2E

Program Plan Intro

ZIP code

Program plan:

• Create new Windows Forms Application.
• Design the form by placing the labels, textbox, and button and then change their name and properties.
• Inside the “Display” button,
  • Check whether the does not contain any data.
    • If the condition satisfies, display the string “Please enter your ZIP code” in the label box using If…Then…Else statement.