visioforge/.Net-SDK-s-samples ? reverse-engineered prompt

Build me a set of simple sample apps for VisioForge .NET SDKs so I can quickly see how the products work in practice.

I want one easy start here app for video capture, one for media playback, and one for video editing. The capture demo should open a webcam, show a live preview, and let me record. The player demo should load a local video file, play it, pause it, and scrub through it. The edit demo should let me pick two video files and join them into one output file.

Keep the apps straightforward and focused on the basics, with a clean desktop UI and clear buttons so someone can run them in Visual Studio without much setup. If there are any platform specific pieces or extra runtime files needed, wire those in too so the demos actually run after build. Use the current docs online if you need to confirm anything.