VB.net 2005 Global Variables and Functions

J

jaydwest

JayW

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• Mar 19, 2008

• #1

I'm an experienced Access Developer but new to VB.net. I'm trying to figure our how and if VB.net provides the equivalent to Global Variables and Global Functions.

It looks like I need to use classes but I can't seem to figure out how. I know I'm using the wrong part of my brain but would really like to create function that I can access throughout my Application.

Can someone help this ol' dog learn some new tricks?

Thanks.

 

A

AxGryndr

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• Oct 14, 2008

• #2

Public x as string

This is the closest I know of to a global variable.

 

dan-cat

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• Oct 20, 2008

• #3

Yes it's time to start learning about classes.

Create a public class like so:

Code:

Public Class MathHelper

Public Sub New()

End Sub


End Class

Now if you want to create a function that you wish to access throughout your app, create a shared function within that class.

Code:

Public Class MathHelper

Public Sub New()

End Sub


Public Shared Function MultipliedByTwo(i as integer) as Integer

return convert.toint32(i*2)

End Function


End Class

and call it anywhere in your code (because both your function and class are declared public) like so:

Code:

Dim x as Integer = MathHelper.MultipliedByTwo(myInt)

 

SQL_Hell

SQL Server DBA

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• Oct 21, 2008

• #4

Does Access VBA support classes then?

I always thought it didn't... and before .NET the only true OO languages were C++ and Java and some others that I forget

 

SQL_Hell

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• Oct 23, 2008

• #5

Ok, thanks for clearing that up

 

D

devilsphere

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• Oct 24, 2008

• #6

Another thing you can do is if you just want global variables, is to create a module and declare your variables public and then import the module into your form.

For Example
Public Module Module1
Public gstrCustCode as String
Public gstrCustName as String
...


and then

Imports Program.Module1

That may not be the best way but that is how I was taught, and it seems to work just fine.