请教关于C#2.0的TreeView控件的CheckBoxes属性问题

Question

请问:有什么方法能让父级选中时,所有该父级的子级全部被选中,只要选中一个子级时,该子级的所有父级全部被选中,就像杀毒软件选择杀毒目标那样

Answer 1

public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
            treeView1.CheckBoxes = true;
        }        private void Form1_Load(object sender, EventArgs e)
        {
            TreeNode root = treeView1.Nodes.Add("父");
            root.Nodes.Add("子");
            root.Nodes.Add("子");
            root.Nodes.Add("子");            treeView1.NodeMouseClick += new TreeNodeMouseClickEventHandler(treeView1_NodeMouseClick);
        }        void treeView1_NodeMouseClick(object sender, TreeNodeMouseClickEventArgs e)
        {
            foreach (TreeNode node in e.Node.Nodes)
            {
                node.Checked = e.Node.Checked;
            }
        }
    }

Answer 2

        #region TreeView树中Checked属性改变时，处理数据和以下级别节点的选择属性
        private void treeViewEx1_AfterCheck(object sender, TreeViewEventArgs e)
        {
            roleAfterCheck(e);
        }        //处理角色新增和修改数据
        private void roleAfterCheck(TreeViewEventArgs e)
        {
            object[] key = new object[4];
            int nodeType = 1;
            DataRow foundRow;            nodeType = ((RoleTreeNode)e.Node).NodeType;
            if (nodeType == 3)
            {
                key[0] = this.accountCode;
                key[1] = this.roleCode;
                key[2] = ((RoleTreeNode)e.Node).ModuleCode.ToString().Trim();
                key[3] = ((RoleTreeNode)e.Node).OprCode.ToString().Trim();
            }            if (e.Node.Checked == true)
            {
                if (nodeType == 3 && this.dataSetRoleDataHelper2.AdmRoleRight.Rows.Find(key) == null)
                {
                    foundRow = this.dataSetRoleDataHelper2.AdmRoleRight.NewRow();
                    foundRow["AccountCode"] = key[0];
                    foundRow["RoleCode"] = key[1];
                    foundRow["ModuleCode"] = key[2];
                    foundRow["OprCode"] = key[3];
                    this.dataSetRoleDataHelper2.AdmRoleRight.Rows.Add(foundRow);
                }
                if (e.Node.Parent != null)
                    e.Node.Parent.Checked = true;                bool isNodesChecked = false;
                foreach (TreeNode n in e.Node.Nodes)
                {
                    if (n.Checked == true)
                    {
                        isNodesChecked = true;
                        break;
                    }
                }
                if (!isNodesChecked)
                    treeNodeCheck(e.Node, e.Node.Checked);
            }
            else
            {
                if (nodeType == 3)
                {
                    foundRow = this.dataSetRoleDataHelper2.AdmRoleRight.Rows.Find(key);
                    if (foundRow != null)
                        foundRow.Delete();
                }
                treeNodeCheck(e.Node, e.Node.Checked);
            }
        }        private void treeNodeCheck(TreeNode node, bool check)
        {
            foreach (TreeNode n in node.Nodes)
            {
                if (n.Checked != check)
                    n.Checked = check;
                treeNodeCheck(n, check);
            }
        }
        #endregion