VB 2005 and windows form application

I am having difficulty putting my question into words but..

Is there a way to determine whether my win form application has focus
or it is active or being used?

I think I should have give some more information

I want to refresh my application's underlying datasources (DataSet and
Object Collection) periodically
to reflect underlying database changes.

I have put a timer on the form which will call a sub procedure to
update the application's underlying datasources. I just want to make
sure that if the current application is being used just skip the call
to subprocedrue to update datasources.

Try (VB 2005)
System.Windows.Forms.Application.OpenForms

c_shah 写道：

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It will give me whether the form is open or not?

I want to know whether you have focus on the form (by mouse or
keyboard).

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