[英]How can I search a specific node in this treeview from text input on a button press?
我有一個簡單的代碼,用於創建具有添加,刪除和編輯按鈕的樹結構。 我想通過文本框(textBox1)和按下按鈕(button4)從添加的節點中搜索特定節點,但我似乎無法使其工作。 有什么建議么?
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace WindowsFormsApplication1
{
public partial class Form1 : Form
{
public Form1()
{
InitializeComponent();
}
private void Button1_Click(object sender, EventArgs e)
{
TreeNode node = new TreeNode(textBox1.Text);
try
{
treeView1.SelectedNode.Nodes.Add(node);
}
catch (Exception)
{
treeView1.Nodes.Add(node);
}
}
private void Button2_Click(object sender, EventArgs e)
{
treeView1.SelectedNode.Text = textBox1.Text;
}
private void TreeView1_AfterSelect(object sender, TreeViewEventArgs e)
{
textBox1.Text = treeView1.SelectedNode.Text;
}
private void Button3_Click(object sender, EventArgs e)
{
treeView1.SelectedNode.Remove();
}
private void Button4_Click(object sender, EventArgs e)
{
}
}
}
只需使用這樣的linq查詢:
TreeNode[] treeNodes = treeView1.Nodes.Cast<TreeNode>() .Where(r => r.Text == textBox1.Text).ToArray();
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