I've started an open-source parallax scrolling component project on CodePlex to help game developers create repeating scrolling backgrounds for their XNA games. It's still in early stages, but currently includes a 2D camera, layer oscillators, scrolling, and clipping functionality. Check out the XNAParalax Component project on CodePlex and provide feedback!
I was developing a component in XNA and needed a way to edit Vector2 properties directly within the Game Designer. Since Vector2 is a struct and doesn't inherently support this, I created a custom TypeConverter. The provided code allows you to modify Vector2 values in the designer using comma notation (e.g., 50, 100). Feel free to adapt it for other types like Vector3.