1.定義ListItem類
public class ListItem
{
private string _key = string.Empty;
private string _value = string.Empty;
public ListItem(string pKey, string pValue)
{
_key = pKey;
_value = pValue;
}
public override string ToString()
{
return this._value;
}
public string Key
{
get
{
return this._key;
}
set
{
this._key = value;
}
}
public string Value
{
get
{
return this._value;
}
set
{
this._value = value;
}
}
}
2.使用
ListItem listItem1 = new ListItem("1","中國");
ListItem listItem2 = new ListItem("1","美國");
ListItem listItem3 = new ListItem("1","英國");
comboBox1.Items.Add(listItem1);
comboBox1.Items.Add(listItem2);
comboBox1.Items.Add(listItem3);
3.取值
string id = ((ListItem)comboBox1.SelectedItem).Key;
string value = ((ListItem)comboBox1.SelectedItem).Value;
4.默認選中項
comboBox1.SelectedIndex = 0;//設置第一項為默認選擇項
comboBox1.SelectedItem = listItem1//設置指定的項為默認選擇項