One of the goals of quickpart is to ensure that the Web Part created using it does not lose any existing functions of the Web part, including the custom attributes of the Web part and the Web part connection. Quickpart supports custom attributes and Web part connection by Using ASP. NET 2.0 web parts framework uses the same method to create custom properties for your user controls, or define methods for sending and receiving data through Web part connection. Then, quickpart is automatically processed, make them take effect.
I will not talk about how to create custom attributes in the user control and use the Web part connection function. Many people have already written relevant tutorials. Now you can use these two videos to learn how to enable these two functions through quickpart: Video 1: custom attributes; video 2: Web part connection.
For complete information about quickpart, visit the quickpart resource page.