If MyUserProgInfo.frmLogin使用WebServices Then
cbo_單據別1.DataSource = ws.ItemtblB備案手冊單據別基本資料表_GetMdl()
Else
cbo_單據別1.DataSource = New BLLMSSQL.BllBasicCtrlsSource().ItemtblB備案手冊單據別基本資料表
End If
cbo_單據別1.DisplayMember = "DisplayValue"
cbo_單據別1.ValueMember = "單據別"
cbo_單據別2.BindingContext = New BindingContext()
cbo_單據別2.DataSource = cbo_單據別1.DataSource
cbo_單據別2.DisplayMember = "DisplayValue"
cbo_單據別2.ValueMember = "單據別"
參考：
WinForms ComboBox data binding gotcha
Multiple Combo Boxes With The Same Data Source (C#)
BindingContext 類別
关于控件使用DataBindings.Add方法进行简单绑定的问题
Bind multiple ComboBox to a single List - Issue: When I select an item, all combo boxes change
WinForm数据绑定--BindingContext
How can i bind data to a datagridview combobox column?
You could create a BindingList<> object to hold your objects and then bind that list to the three controls. Then setting the BindingContexts to different objects would let the 3 controls have different positions with a single list.
public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void Form1_Load(object sender, EventArgs e) { BindingList<MyObject> list = new BindingList<MyObject>(); list.Add(new MyObject("Ramya", 43)); list.Add(new MyObject("Manju", 43)); list.Add(new MyObject("Gulnus", 43)); list.Add(new MyObject("Sona", 43)); dataGridView1.DataSource = list; comboBox1.DataSource = list; comboBox1.DisplayMember = "Name"; comboBox1.ValueMember = "Name"; comboBox2.DataSource = list; comboBox2.DisplayMember = "Name"; comboBox2.ValueMember = "Name"; comboBox1.BindingContext = new BindingContext(); comboBox2.BindingContext = new BindingContext(); dataGridView1.BindingContext = new BindingContext(); } } public class MyObject { private string mName; private int mAge; public MyObject(string s, int i) { mName = s; mAge = i; } public string Name { get { return mName; } set { mName = value; } } public int Age { get { return mAge; } set { mAge = value; } } public override string ToString() { return Name; } }
