很久沒寫了，寫點；TreeView的聯動復選框

private void tvSysFunctionMenu_NodeMouseClick(object sender, TreeNodeMouseClickEventArgs e)
        ...{
            if (e.Node != tvSysFunctionMenu.Nodes[0])
            ...{
                SetChildNodeChecked(e.Node);
                SetParentNodeChecked(e.Node);
            }
            else
            ...{
                SetChildNodeChecked(e.Node);
            }
        }


        //根據父節點狀態設置子節點的狀態
        private void SetChildNodeChecked(TreeNode parentNode)
        ...{
            foreach (TreeNode node in parentNode.Nodes)
            ...{
                node.Checked = parentNode.Checked;
                if (node.Nodes.Count > 0)
                ...{
                    SetChildNodeChecked(node);
                }
            }
        }

        //根據子節點狀態設置父節點的狀態
        private void SetParentNodeChecked(TreeNode childNode)
        ...{
            TreeNode parentNode = childNode.Parent;
            if (!parentNode.Checked && childNode.Checked) //當子結點選中，父結點沒選中時，則：選中父結點
            ...{
                parentNode.Checked = true;
            }
            else if (parentNode.Checked && !childNode.Checked) //取消選中其下全部子結點時，其父結點也取消
            ...{
                int checks = 0; //統計子結點的個數（為0時表示取消了其下全部子結點）
                foreach (TreeNode node in parentNode.Nodes)
                ...{
                    if (node.Checked)
                    ...{
                        checks++;
                        break;
                    }
                }
                if (checks == 0) //子結點都取消選中時，其父結點也取消
                ...{
                    parentNode.Checked = false;
                    if (!parentNode.Index.Equals(0))
                    ...{
                        SetParentNodeChecked(parentNode);
                    }
                }
            }
        }

        //節點選中狀態更改
        protected void TreeNodeCheckStatusChanged(object sender, TreeNodeMouseClickEventArgs e)
        ...{
            SetChildNodeChecked(e.Node);
            // 判斷是否是根節點
            if (!e.Node.Index.Equals(0))
            ...{
                SetParentNodeChecked(e.Node);
            }
        }