CheckBoxList.SelectedItem.Text是怎么样获得所选的值.

[tqbba]

public partial class diaocha : System.Web.UI.Page
{
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
SetBind();
}
}
protected void SetBind()
{

string[] DataSorce1 = new string[] { "男20-25岁", "男26-35", "男36-45", "男46以上", "女20-25岁", "女26-35", "女36-45", "女46以上" };
CheckBoxList1.DataSource = DataSorce1;
CheckBoxList1.DataBind();

}

protected void Button1_Click(object sender, EventArgs e)
{
string CheckBoxList1Item = CheckBoxList1.SelectedItem.Text;
Response.Write(CheckBoxList1Item);
}
}
在我按了BUTTON后CheckBoxList1.SelectedItem.Text怎么会获得我选的值的???

[zhanghy1028]

string CheckBoxList1Item="";
for (int i = 0; i < CheckBoxList1.Items.Count; i++)
{
if (CheckBoxList1.Items[i].Selected)
{
CheckBoxList1Item+= CheckBoxList1.Items[i].Text ;
Response.Write(CheckBoxList1Item);

}
}

[tqbba]

To zhanghy1028 我的意思不是如何获取CheckBoxList所选的值.而是服务器在处理回发事件的时候.服务器是如何知道我所选的项.?不知道我有没讲清楚.我表达能力比较差.不好意思.