Drag Drop Ex3

This exercise is to help you learn how to code.

The following questions are about checking that a user's input is valid.
You should have completed the File Handling tutorial first.

Instructions

Read the questions in the grey boxes below on the left .

Drag each question in the grey boxes to the blue box with the correct code.

Then press the "Submit" button to check your answers.

What's the code to ..? Check if a textbox is empty. If it is, display an error message

What's the code to ..? Check if a user has entered a number in the textbox called Text1. If not, display an error message

If ( Not Text1 = "") ) then
msgbox "some message"
End If

What's the code to ..? Check if a user has entered anything in the textbox. If so, display a message

If (Not IsNumeric(Text1) ) then
msgbox "invalid input"
End If

If ( IsNumeric(Text1) ) then
msgbox "invalid input"
End If

If ( Text1 = "" ) then
msgbox "invalid input"
End If