C# (CSharp) TreeView_Departments示例

示例#1

 private void Button_CollapseAllTreeView_Click(object sender, EventArgs e)
 {
     TreeView_Departments.CollapseAll();
 }

示例#2

 private void Button_ExpandAllTreeView_Click(object sender, EventArgs e)
 {
     TreeView_Departments.ExpandAll();
 }