What are the differences between the Drag-and-Drop functionalities in Visual Basic 6.0 and Visual Basic .NET?
Visual Basic 6.0 supports two kinds of drag-and-drop operations: standard drag-and-drop functionality, which supports moving items between controls within a single form, and OLE drag-and-drop functionality, which supports moving items between applications. In Visual Basic .NET, the drag-and-drop operations are consolidated into a single framework. Drag-and-drop operations between controls is handled the same as drag-and-drop operations between applications. This change simplifies the programming burden for new development, but it requires rewriting drag-and-drop code for existing applications. The changes necessary to make the drag-and-drop code work in Visual Basic .NET are fairly significant. Because of changes in the drag-and-drop programming model, the upgrade wizard cannot automatically make the modifications. Instead, the methods are unchanged, and you have to implement the logic in the Visual Basic.NET drag-and-drop event model.
