DevExpress控件之TreeList

基于v18.1

使用AppendNode方法手动赋值时，首先要添加treeListColumn

默认样式修改后的样式

1 隐藏TreeList的列头

设置OptionsView下ShowColumns=False

2 隐藏竖直水平线

设置OptionsView下ShowHorzLines、ShowVertLines=False

3 隐藏左侧Node的指示符面板

设置OptionsView下ShowIndicator=False

4 禁止编辑节点

设置OptionsBehavior下Editable=False

5、如何默认展开所有的节点,   ExpandAll（）

    treeList1.ExpandAll();

    以及TreeNode.Expand = false;

    或者你可以控制展开的层数 treeList1.ExpandLevel = 10;

    表示: 展开10层

// 第一层下的所有接点展开

treeList1.Nodes[0].ExpandAll();

6. 去掉边框

BorderStyle=NoBorder

添加节点方法

this.treeList1.BeginUnboundLoad();

this.treeList1.AppendNode(new object[] {
"111"}, -1);
this.treeList1.AppendNode(new object[] {
"222"}, 0);
this.treeList1.AppendNode(new object[] {
"444"}, 1);
this.treeList1.AppendNode(new object[] {
"333"}, -1);
this.treeList1.EndUnboundLoad();

节点折叠

treeList1.CollapseAll();

7.TreeList丢失焦点时，也处于高亮选中状态（设置treeList节点的背景色）

treeList1.Appearance.FocusedCell.BackColor = System.Drawing.Color.LightSteelBlue;

treeList1.Appearance.FocusedCell.Options.UseBackColor = true; (默认是true)

二。treeList获取目录下的所有文件及文件夹

treeList1.Nodes.Clear();
TreeListNode rootNode=  this.treeList1.AppendNode(new object[] { rootFilePath }, -1);
TreeListNode firstNode = getRootListNode(treeList1, rootFilePath, 0);

private static TreeListNode getRootListNode(DevExpress.XtraTreeList.TreeList treeListFiles, string dirname, int nodeID) //递归，返回根结点
{
    if (!Directory.Exists(dirname))
        return null;

    string[] dirs = Directory.GetDirectories(dirname);
    string[] files = Directory.GetFiles(dirname);

    foreach (string dir in dirs)
    {
        TreeListNode root2 = treeListFiles.AppendNode(new object[] { dir.Substring (dir.LastIndexOf('\')+1) }, nodeID);
        root2.Tag = dir;

        TreeListNode node2 = getRootListNode(treeListFiles, dir, root2.Id);
    }


    foreach (string file in files)
    {
        TreeListNode node2 = treeListFiles.AppendNode(new object[] { file.Substring (file.LastIndexOf('\')+1) }, nodeID, 1, 1, 0);
        node2.Tag = file;
    }

    return treeListFiles.Nodes.FirstNode;
}

参考：DevExpress_常用控件23_TreeList