VBA - Namespace

Namespace is how a program group variables together and how you can access them at certain point in the execution. Understanding how VBA does this will help you avoid namespace errors.

VBA namespace allows reuse of names.

Here is a code example showing a variable, x, is assigned a value 12.

It then used in a function which assigns the value 113.

It would be easy to assume that the msgbox would contain 133, but it returns 12. This is due to x have two values which depend on where in the code you are. Inside the Sub x is 12, in the function x is 113.

Code Snippet:

Sub a_namespace()

Dim x As Integer

x = 12

func1 (x)

MsgBox x

End Sub


Function func1(x As Integer)

x = 113

End Function




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