C#.net的RadioButtonList默认项怎么弄？

C#.net的RadioButtonList默认项怎么弄？

public partial class WebForm3 : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
List list = new List();
list.Add(new testClass("是"));
list.Add(new testClass("否"));
rdobtnList.DataSource = list;
rdobtnList.DataTextField = rdobtnList.DataValueField = "result";
rdobtnList.DataBind();
for (int i = 0; i < list.Count; i++)
{
if (list[i].Result == "是")//选中条件
{
rdobtnList.SelectedIndex = i;
break;
}
}
}
}
}
public class testClass
{
private string result;

public string Result
{
get { return result; }
set { result = value; }
}
public testClass(string result)
{
this.result = result;
}
}

在RadioButtonList里有Value把这个value=‘是’或者‘否’，在cs中写this.RadioButtonList.SelectValue = ‘是'，就行啦！

RadioButtonList.Items.FindByValue("是").Selected = true;

RadioButtonList.Items.FindByValue("是").Selected = true;
RadioButtonList.Items.FindByValue("否").Selected = false;

RadioButtonList.SelectedValue="是";有时候这样不行.
试下面这个.
ListItem LItem = RadioButtonList.Items.FindByValue("是");
if (LItem != null) LItem.Selected = true;

radiobuttonlist控件有一个叫Sele
ctIndex的属性,这个个属性就是你选定时的索引值。radiobuttonlist.SelectedIndex
获取值的方法如下
radiobuttonlist1.selecteditem.value