/// <summary>/// 用键盘上下左右键和ctrl键移动节点 /// 思路:现复制2个选中的节点。1.为了记住第一次选中节点位置，2在上移过程中现将令一个插入指定位置，/// 然后将选中节点移除/// </summary>/// <param name="treeView">treeview</param>/// <param name="e">键盘的按键</param>private void MoveTreeNodeByKeyWord(TreeView treeView, KeyEventArgs e){if (treeView.SelectedNode != null){if (e.Control != true) return;TreeNode tn = treeView.SelectedNode;TreeNode tempNode = (TreeNode)treeView.SelectedNode.Clone();switch (e.KeyCode){case Keys.Up:if (treeView.SelectedNode.PrevNode == null)return;if (tn.Parent == null)treeView.Nodes.Insert(tn.Index + 2, tempNode);elsetn.Parent.Nodes.Insert(tn.Index + 2, tempNode);treeView.SelectedNode.Remove();treeView.SelectedNode = tempNode;break;case Keys.Down:if (treeView.SelectedNode.NextNode == null)return;if (tn.Parent == null)treeView.Nodes.Insert(tn.Index + 2, tempNode);elsetn.Parent.Nodes.Insert(tn.Index + 2, tempNode);treeView.SelectedNode.Remove();treeView.SelectedNode = tempNode;break;case Keys.Left:if (treeView.SelectedNode.Parent == null)return;if (treeView.SelectedNode.Parent.Parent == null)treeView.Nodes.Add(tempNode);elsetn.Parent.Parent.Nodes.Add(tempNode);tn.Remove();treeView.SelectedNode = tempNode;break;case Keys.Right:if (treeView.SelectedNode.NextNode == null)return;treeView.SelectedNode.NextNode.Nodes.Insert(0, tempNode);tn.Remove();treeView.SelectedNode = tempNode;break;}}}