C# Combox 绑定数据

1.在界面中添加一个combox
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2.将数据绑定到combox

 List<GrindingType> type = new List<GrindingType>();type.Add(new GrindingType { Id = 1, Name = "Product A", Type = new List<string> { "1", "2" } });type.Add(new GrindingType { Id = 2, Name = "Product 2", Type = new List<string> { "1", "2" } });type.Add(new GrindingType { Id = 3, Name = "Product 3", Type = new List<string> { "1", "2" } });type.Add(new GrindingType { Id = 4, Name = "自定义",Type=null});comboBox1.DataSource = type; // 使用DataSource属性加载数据，comboBox1.DisplayMember = "Name"; // 设置显示成员为Name属性。comboBox1.ValueMember = "Id"; // 设置值成员为Id属性。

3.为combox添加列表变动事件
在这里插入图片描述
4.获取列表点击列数据

//获取comboBox的DisplayMember值
Console.WriteLine("DisplayMember：" + comboBox1.Text);
//获取comboBox的ValueMember值
Console.WriteLine("ValueMember：" + comboBox1.SelectedValue.ToString());
//获取combox上绑定数据
GrindingType grindingType = (GrindingType)comboBox1.SelectedItem;
Console.WriteLine("选中值：" + grindingType.Id + "..." + grindingType.Name);

5.完整实现

using System;
using System.Collections.Generic;
using System.Windows.Forms;namespace WindowsFormsApp1
{public partial class Form1 : Form{public class GrindingType{public int Id { get; set; }public string Name { get; set; }public List<string> Type { get; set; }}public Form1(){InitializeComponent();LoadComboBoxData();}private void LoadComboBoxData(){List<GrindingType> type = new List<GrindingType>();type.Add(new GrindingType { Id = 1, Name = "Product A", Type = new List<string> { "1", "2" } });type.Add(new GrindingType { Id = 2, Name = "Product 2", Type = new List<string> { "1", "2" } });type.Add(new GrindingType { Id = 3, Name = "Product 3", Type = new List<string> { "1", "2" } });type.Add(new GrindingType { Id = 4, Name = "自定义", Type = null });comboBox1.DataSource = type; // 使用DataSource属性加载数据，comboBox1.DisplayMember = "Name"; // 设置显示成员为Name属性。comboBox1.ValueMember = "Id"; // 设置值成员为Id属性。}private void comboBox1_SelectedValueChanged(object sender, EventArgs e){Console.WriteLine("===================SelectedValueChanged=======================");//获取comboBox的DisplayMember值Console.WriteLine("DisplayMember：" + comboBox1.Text);//获取comboBox的ValueMember值Console.WriteLine("ValueMember：" + comboBox1.SelectedValue.ToString());//获取combox上绑定数据GrindingType grindingType = (GrindingType)comboBox1.SelectedItem;Console.WriteLine("选中值：" + grindingType.Id + "..." + grindingType.Name);}}
}

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