摘要： 定义一个TreeView 名字为TVdepartment,设置allowdrop为True//移动代码 private void MiMoveUp_Click(object sender, EventArgs e) //向上移动 { TreeNode Node = TVdepartment.SelectedNode; TreeNode PrevNode = Node.PrevNode; if (PrevNode != null) { TreeNode NewNode = (TreeNode)Node.Clone(); if (Node.Parent == null) { TVdepartmen 阅读全文