Question

怎么给combobox的items属性赋值values-CSDN论坛

Answer 1

因为ComboxItem是Object对象,而控件自身没有Value属性.所以,需要自定义一个类,用其对象来存储Text,Value.

public class ComboxItem
{
public string Text = "";

public string Value = "";
public ComboxItem(string _Text, string _Value)
{
Text = _Text;
Value = _Value;
}

public override string ToString()
{
return Text;
}
}

赋值 如下:
combobox2.Items.Add(New ComboxItem("Text1", "Value1"));
combobox2.Items.Add(New ComboxItem("Text2", "Value2"));
combobox2.Items.Add(New ComboxItem("Text3", "Value3"));
或者:
ComboxItem[] x = {
new ComboxItem("Text1", "Value1"),
new ComboxItem("Text2", "Value2"),
new ComboxItem("Text3", "Value1")
};
combobox2.Items.AddRange(x);
取值时需要转换一下 如下:
string str = ((ComboxItem)combobox2.Items[0]).Value;

这个转换和你直接为Combobox控件绑定数据源是一样的.
如果你是这么绑定的数据
combobox2.DataSource = ds.Tables(0);//ds是dataset
combobox2.DisplayMember = "TextCol";
combobox2.ValueMember = "ValueCol";
那么得这么取值
string str = ((System.Data.DataRowView)combobox2.Items[0])("ValueCol").ToString;