so shared and static means the same na??????

So what do you call a variable that can be read and updated absolutely anywhere in the whole project, which can't be masked by any kind of local dimming?

Is there a way to declare a variable (as whatever you call the above) so that it can't subsequently be used for any other purpose in the program, project ?  i.e. if you delcare a (as whatever you call the above) then a is always a and can't be dim'd to anything else or some local a means something different ?

It is indeed possible to create global variables in VB.NET:

Public Module Globals

  Public g_strPIN As String = ""

End Module

Whether this is desirable is another matter.  Globals behave like one would expect in a Windows application.  In the ASP world, however, they are treated like SHARED variables.  What one user sets another sees - not usually a desired effect.  

Wish this was better documented!

I am developing an application in vb.net. I am new to this and I appreciate your help.

I need to declare few variables to be used /modified from various classes and forms within a project.

I do not want these variable to be available out side the project. What is the best way of doing this? any help with example is appreciated. Please provide any possible example in vb.net . Thanks.