ClearTreeView

  清除TreeView内容，C#源码下载，这是一个需要与数据库相结合的TreeView例子，示例演示了如何在C#中清除TreeView里的内容，刚接触C#的新手们，这是一个入门级的例子，因此有必要掌握一下。(Clear TreeView, C# source code download, this is a need with the database-phase combination of TreeView example, the example demonstrates the how in C# to clear the contents in the TreeView, new to the C# novice who, this is an entry-level example, so necessary to master.)