Accessing Application Forms (Visual Basic)
The My.Forms object provides an easy way to access an instance of each Windows Form declared in the application's project. You can also use properties of the My.Application object to access the application's splash screen and main form, and get a list of the application's open forms.
The following table lists examples showing how to access an application's forms.
Access one form from another form in an application.
Display the titles of all the application's open forms.
Update the splash screen with status information as the application starts.