RE: silly, probably meaninigless question

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Hi Matt,

Thank you for posting.

I think there're three main differences between Dim and Private.

1. Elements you can declare with Dim are different from those with Private.

Dim is only used to declare variables. However, Private can be used for
Interface, Class, Structure, Structure members, Procedure, Property, Member
variables,Constant, Enumeration, Event, External declaration and Delegate.

2. Declaration context within which you can use Dim and Private are
different.

Dim can be used in a procedure or function, however Private can't. For
example, suppose there's a procedure named MyProcedure. We could use Dim
to declare the variable in MyProcedure, but we couldn's use Private to
declare it.

Sub MyProcedure()
Dim localVar As String

' we couldn't use Private to declare a variable in a procedure
' the following code will cause an error
Private localVar1 As String

End Sub

3. Elements declared with Dim has the default access level. Elements
declared with Private are always private.

For example, if you use Dim to declare a varible in a Class, the variable
is private because in VB.NET the default access level of member variable in
class is private.

On the contrary, if you use Dim to declare a variable in a Structure, the
variable is public because in VB.NET the default access level of member
variable in structure is public.

Hope this helps.
If you have anything unclear, please feel free to let me know.


Sincerely,
Linda Liu
Microsoft Online Community Support

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