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C# comboBox
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![C# comboBox](/upload/InfoBanner/zyjiaocheng/1245/bab4af60af6d4d86ae5f1678d4ec63b8.jpg)
Employee
1 using System; 2 using System.Collections.Generic; 3 using System.Linq; 4 using System.Text; 5 using System.Threading.Tasks; 6 7 namespace WinApp03_ComboBox 8 { 9 enum EM_Department 10 { 11 开发部, 12 人事部, 13 财务部 14 } 15 class Employee 16 { 17 public int ID { get; set; } 18publicstring Name { get; set; } 19public EM_Department Department { get; set; } 20public DateTime BirthDate { get; set; } 2122///<summary>23/// 重写ToString()方法 24///</summary>25///<returns>返回值: Name属性 </returns>26publicoverridestring ToString() 27 { 28returnthis.Name; 29 } 30 } 31 }
From1
1 using System; 2 using System.Collections.Generic; 3 using System.ComponentModel; 4 using System.Data; 5 using System.Drawing; 6 using System.Linq; 7 using System.Text; 8 using System.Threading.Tasks; 9 using System.Windows.Forms; 10 11 namespace WinApp03_ComboBox 12 { 13 public partial class Form1 : Form 14 { 15 public Form1() 16 { 17 InitializeComponent(); 18 } 19 20 private void Form1_Load(object sender, EventArgs e) 21 { 22/** 23 // 向comboBox1中添加字符串 24 comboBox1.Items.Add("Hello"); 25 comboBox1.Items.Add("World"); 26 comboBox1.Items.Add("你好,世界"); 27 // 设置默认索引 28 comboBox1.SelectedIndex = 2; 29 * */3031 List<Employee> employees = new List<Employee>() 32 { 33new Employee(){ID = 1, Name = "张三", BirthDate = new DateTime(1988,04,23), Department = EM_Department.开发部}, 34new Employee(){ID = 2, Name = "李四", BirthDate = new DateTime(1990,10,08), Department = EM_Department.财务部}, 35new Employee(){ID = 3, Name = "王五", BirthDate = new DateTime(1995,03,06), Department = EM_Department.人事部}, 36new Employee(){ID = 4, Name = "赵六", BirthDate = new DateTime(1990,07,09), Department = EM_Department.开发部} 37 }; 3839// 绑定数据源40 comboBox1.DataSource = employees; 41// 显示的是数据源的Name属性42 comboBox1.DisplayMember = "Name"; 43// "值"字段是数据源的ID属性44 comboBox1.ValueMember = "ID"; 45// 设置索引,默认不选择(-1)46 comboBox1.SelectedIndex = -1; 47 } 4849privatevoid comboBox1_SelectedValueChanged(object sender, EventArgs e) 50 { 51if ( -1 == comboBox1.SelectedIndex ) 52 { 53 label1.Text = "当前选中项索引: -1"; 54 label2.Text = "当前未选中任何项"; 55 label3.Text = "当前未选中任何项"; 56 } 57 label1.Text = "当前选中项索引: " + comboBox1.SelectedIndex.ToString(); 58 label2.Text = "当前选中项ID: " + comboBox1.SelectedValue.ToString(); 59 label3.Text = "当前选中项Name: " + comboBox1.SelectedItem.ToString(); 60 } 6162 } 63 }
原文:http://www.cnblogs.com/DuanLaoYe/p/5351625.html
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