正文
c#(winform)中自定义ListItem类方便ComboBox添加Item项
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1.定义ListItem类
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","中国");
ListItem
listItem2 = new ListItem("1","美国");
ListItem
listItem3 = new ListItem("1","英国");
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.默认选中项
comboBox1.SelectedIndex = 0;//设置第一项为默认选择项
comboBox1.SelectedItem = listItem1//设置指定的项为默认选择项
