Exercise: Subroutines taking arguments

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Category ==> Advanced VBA  (29 exercises)
Topic ==> Passing arguments  (6 exercises)
Level ==> Relatively easy
Course ==> Advanced VBA

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In some suitable application (Excel, for example) create a simple subroutine to display a message.  Your subroutine should take one argument - the message to be displayed - and produce output like this:

Advanced VBA exercise - Passing arguments (image 1)

You can pass different messages to your subroutine to display different message boxes

If you still have time, try writing a different subroutine to unprotect or protect a given worksheet.  This subroutine should take 2 arguments:

  • The name of the sheet to be protected or unprotected
  • Whether to protect the sheet or not (a Boolean argument)

Note that to protect or unprotect a worksheet you just apply the Protect or Unprotect methods. 

Try running your  macro using commands like this to test it:

Advanced VBA exercise - Passing arguments (image 2)

Two sample commands to test your macro

If you still have time, try making the second argument optional, so that by default your subroutine will protect a sheet if the protection status is not explicitly given when the macro is run.

Save this file as Examples of arguments, and close it down.

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