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.NET Forum / Windows Forms / WinForm General / June 2007Reference Caller's Application Variables from DLL
I want to be able to access some global variables (defined in a winforms "ApplicationEvents.vb") from a DLL. I assume I need to pass a reference to the application object to the DLL. If so, how would I define it in the DLL and how would I set it in the main app? Is there some other way to get a reference to the DLL instantiator's application object from inside the DLL? Thanks. Declare the global variables as public and shared: Namespace SomeNamespace Public Class SomeClassName Public Shared SomeVariableField As Integer = 3 End Class End Namespace Then, inside the DLL access the variables like this: Dim i As Integer = SomeNamespace.SomeClassName.SomeVariableField -- Bryan Phillips MCT, MCSD, MCDBA, MCSE Blog: http://bphillips76.spaces.live.com Web Site: http://www.composablesystems.net > I want to be able to access some global variables (defined in a > winforms "ApplicationEvents.vb") from a DLL. [quoted text clipped - 7 lines] > > Thanks. Bryan, Thanks for the response, but I know I'm missing something because I don't understand how this will work. I have a winforms project and I declare a class in the project like this: Namespace nsGlobal Public Class clsGlobal Public Shared PubSharedString As String = "PubSharedString" End Class End Namespace In the winforms project I have a reference to a separate DLL project. Obviously the winforms app can instantiate a class from DLL to get a reference to the class in the DLL, but I don't see how a class *within* the DLL has any kind of a reference to the class from the winforms app that instantiated the DLL. Referencing "nsGlobal" from the DLL project tells me that "nsGlobal is not declared". I also tried putting the "nsGlobal" namespace in "Application.vb" (along with the "My" namespace) and that fared no better. What fundamental understanding am I missing here? Thanks. On Jun 5, 6:49 pm, "Bryan Phillips" <bphill...@nospam.spamcop.net.spammenot> wrote: > Declare the global variables as public and shared: > [quoted text clipped - 33 lines] > > - Show quoted text - Shared/static constructors and fields/variables are executed or assigned when the assembly is first loaded into memory. If you are not able to see nsGlobal in Intellisense, there may be a root namespace for the DLL that you are omitting. Usually, the root namespace matches the name of the project unless you renamed the project after creating it. -- Bryan Phillips MCT, MCSD, MCDBA, MCSE Blog: http://bphillips76.spaces.live.com Web Site: http://www.composablesystems.net > Bryan, > [quoted text clipped - 66 lines] > > > > - Show quoted text - Free MagazinesGet these publications absolutely FREE for up to 12 months. There are no hidden fees and no obligation. Simply choose a title, complete the application form and submit it. Read more ...
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