C# WinForm控件之advTree

原文链接：https://www.cnblogs.com/SoftWareIe/p/8757270.html

0.属性和方法

//属性方法
advTree1.DragDropEnabled = !advTree1.DragDropEnabled;//控制是否可以拖动节点
advTree1.MultiSelect = !advTree1.MultiSelect;//控制节点是否可以多选
advTree1.ExpandButtonType = DevComponents.AdvTree.eExpandButtonType.Triangle;//展开节点前边的图标 三角形
advTree1.ExpandButtonType = DevComponents.AdvTree.eExpandButtonType.Ellipse;//圆形中间一个线
advTree1.ExpandButtonType = DevComponents.AdvTree.eExpandButtonType.Image;//展开下边1的图 折叠下边0的图
advTree1.ExpandImage = imageList1.Images[1];
advTree1.ExpandImageCollapse = imageList1.Images[0];
advTree1.ExpandButtonType = DevComponents.AdvTree.eExpandButtonType.Rectangle;//默认方块形中间加一个线
advTree1.ExpandButtonSize = new Size(10, 10);//展开按钮大小 默认8，8
advTree1.SelectionBoxStyle = DevComponents.AdvTree.eSelectionStyle.FullRowSelect;//选中一行
advTree.DragDropEnable=false; 禁止拖动   
// advTree1.Nodes.Clear();//清空所有节点
advTree1.ExpandAll();//全部展开
advTree1.CollapseAll();//全部折叠
Node n = advTree1.SelectedNode.Copy();//复制先中节点
advTree1.SelectedNode.Remove();//移除节点
advTree1.Nodes.Add(n);//添加节点

1.对advTree操作都是在Nodes属性基础上的如:新建 一个Node并添加到tree中 node 前的图片 展示

Node n = new Node();//节点下再加节点 像部门档案等可递归实现
n.Text = "小张";
n.Nodes.Add(new Node("男"));
n.Nodes.Add(new Node("18"));
n.Nodes.Add(new Node("小张永远18，你懂得")); 
n.Nodes.AddRange(new Node[] { new Node("汉"), new Node("有三个女朋友")});//集合增加
n.image=//图片源 显示图片
n.ImageExpanded=//图片源 节点展开时显示的图片

advTree1.Nodes.Add(n);

2.取选中节点的值

advTree1.SelectedNode.Text;

 3.选中时节点 执行操作（SelectedIndexChanged） 

   private void AdvTree1_SelectedIndexChanged(object sender, EventArgs e)
        {
            //MessageBox.Show(advTree1.SelectedNode.Text);
     
            //层级
            if (advTree1.SelectedNode.Level == 0)
            {
                //语句1
            }
            else if (advTree1.SelectedNode.Level ==1)
            {
                //语句2
            }
        }    

 4.拖拽 各种限制都在BeforeNodeDrop设置 如：我只能在层级1级上相互拖动 不可去0级2级

 private void AdvTree1_BeforeNodeDrop(object sender, TreeDragDropEventArgs e)
        {                                   
            Node node = e.Node;
            Node pNode = e.NewParentNode;

            if (pNode==null)
            {
               MessageBox.Show("不能改变层级关系");
                e.Cancel = true;
                return;
            }


            if (pNode.Level != 0)
            {
                 MessageBox.Show("不能改变层级关系");
                e.Cancel = true;
                return;
            }
        
        }