如何用代码给TreeView的节点添加样式？（ASP.NET）

恭喜你，楼上成功的把你忽悠了，那个是添加子节点的方法

TreeView tv = new TreeView()

tv.NodeStyle 其实TreeView有NodeStyle属性的，你可以设置

//contextMenuStrip1与treeView1关联，在节点上单击右键就给该节点添加子节点，在空白地方单击右键，就添加根节点

using System

using System.Collections.Generic

using System.ComponentModel

using System.Data

using System.Drawing

using System.Text

using System.Windows.Forms

namespace WindowsApplication8

{

public partial class Form1 : Form

{

public Form1()

{

InitializeComponent()

this.treeView1.LabelEdit = true

}

private void treeView1_NodeMouseClick(object sender, TreeNodeMouseClickEventArgs e)

{

if (e.Button == MouseButtons.Right)

{

this.treeView1.SelectedNode = e.Node

flag = true

contextMenuStrip1.Show(MousePosition)

}

}

bool flag = false

private void 添加节点ToolStripMenuItem_Click(object sender, EventArgs e)

{

TreeNode tn = new TreeNode()

if (flag)

{

this.treeView1.SelectedNode.Nodes.Add(tn)

this.treeView1.SelectedNode = tn

tn.BeginEdit()

flag = false

}

else

{

this.treeView1.Nodes.Add(tn)

this.treeView1.SelectedNode = tn

tn.BeginEdit()

flag = false

}

}

private void treeView1_AfterLabelEdit(object sender, NodeLabelEditEventArgs e)

{

e.Node.Text = e.Label

}

private void contextMenuStrip1_Opening(object sender, CancelEventArgs e)

{

if (!flag)

{

this.treeView1.SelectedNode = null

}

}

bool flag1 = false

private void contextMenuStrip1_ItemClicked(object sender, ToolStripItemClickedEventArgs e)

{

flag1 = true

}

private void contextMenuStrip1_Closed(object sender, ToolStripDropDownClosedEventArgs e)

{

if (!flag1)

{

flag = false

}

else

{

flag1 = false

}

}

}

}

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