目前在 WinUI 3 项目中，如果要引入 PagerControl 控件，需要安装预览版 WindowsAppSDK (WinUI 3) Nuget 包，稳定版本尚未提供该控件。这是从预览版投影代码中拉取到的 PagerControl 控件，并移除了预览版标签，经测试可以在稳定版本中使用。
Currently, in WinUI 3 projects, if you want to introduce the PagerControl control, you need to install the preview WindowsAppSDK (WinUI 3) Nuget package, which is not yet available in the stable version. This is a PagerControl control pulled from the preview projection code, with the preview label removed, and tested to be available in the stable version.
PagerControl 控件说明：Readme.md
PagerControl control description: Readme.md
