Single Instance Form in a MDI application

Single Instance Form in a MDI application

Assuming you only want a single instance of a form type, I'd suggest you add a Dictionary(Of Type, Form). ShowOrActiveForm would have a single parameter of Type and would be a subroutine.The Form object could be found based on a ContainsKey. The rest of the ShowOrActiveForm function would be...

This example contains the code to manage the menu of open forms (standard Windows menu). When created, each mdi-child gets a menu item and event handler through which this element is removed from the menu when the corresponding form is closed.private void ShowOrCreateMdiChild(Type formType)...