I’m working with Windows Workflow Foundation 3.5 and I’ve created a custom composite activity that contains multiple child activities. My goal is to allow other developers to drag and drop additional activities onto specific areas of my composite activity when they’re designing workflows.
By default, custom composite activities don’t support drag and drop operations. I attempted to solve this by creating a custom activity designer and overriding methods like OnDragDrop, but this approach hasn’t been successful.
Has anyone managed to implement this functionality? I’m looking for working code examples or step-by-step guidance on how to make certain parts of a composite activity accept dropped activities during design time. Any practical solutions with code snippets would be greatly appreciated.