ComboBox手工添加数据示例

//引用命名空间System.Collections.Generic
comboBox1.Items.Add(new KeyValuePair<string, string>("aaa", "1"));
comboBox1.Items.Add(new KeyValuePair<string, string>("bbb", "2"));
comboBox1.Items.Add(new KeyValuePair<string, string>("ccc", "3"));

comboBox1.DisplayMember = "key";
comboBox1.ValueMember = "value";

//获取值
MessageBox.Show(((KeyValuePair<string, string>)comboBox1.SelectedItem).Key + "," + ((KeyValuePair<string, string>)comboBox1.SelectedItem).Value);

public class MyListItem
{
    private string _text;
    private string _value;

    public MyListItem(string text, string value)
    {
        _text = text;
        _value = value;
    }

    public string Text
    {
        get { return _text; }
    }

    public string Value
    {
        get { return _value; }
    }

    //必须
    public override string ToString()
    {
        return _text;
    }
}

comboBox1.Items.Add(new MyListItem("aaa", "1"));
comboBox1.Items.Add(new MyListItem("bbb", "2"));
comboBox1.Items.Add(new MyListItem("ccc", "3"));

//获取值
MessageBox.Show(((MyListItem)comboBox1.SelectedItem).Text + "," + ((MyListItem)comboBox1.SelectedItem).Value);