《ASP.NET1200例》嵌套在DataLisT控件中的其他服务器控件---DropDownList控件的数据绑定

public partial class _238DllInGridView : System.Web.UI.Page

{
ShowImageBll showBll = new ShowImageBll();
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
BindDataList();
sexBind();
}
}

public void BindDataList() {
DataSet ds = showBll.GetStudentList();
DataList1.DataSource = ds;
DataList1.DataBind();
}

public void sexBind()
{
DataSet ds = showBll.GetStudentList();
DropDownList ddlSex;
for (int i = 0; i < DataList1.Items.Count;i++ )
{
if (ds.Tables[0].Rows[i]["StuSex"].ToString() == "男")//数据库性别没有设置，ddlSex控件将默认设置为“男”
{
ddlSex = (DropDownList)DataList1.Items[i].FindControl("ddlSex");
ddlSex.SelectedValue = "0";
}
if (ds.Tables[0].Rows[i]["StuSex"].ToString() == "女")
{
ddlSex = (DropDownList)DataList1.Items[i].FindControl("ddlSex");
ddlSex.SelectedValue="1";
}
}

}
protected void DataList1_ItemCommand(object source, DataListCommandEventArgs e)
{
switch (e.CommandName) {
case "singleDelete":
int id = int.Parse(DataList1.DataKeys[e.Item.ItemIndex].ToString());
showBll.DeleteStudent(id);
Response.Write("<script>alert('删除成功！')</script>");
BindDataList();
break;
case "mutlDelete":

DataListItemCollection dlic = DataList1.Items;//创建一个DataList列表项集合对象
for (int i = 0; i < dlic.Count; i++)
{
CheckBox cb=(CheckBox)dlic[i].FindControl("CheckBox1");
if (cb.Checked)
{
int id1 = int.Parse(DataList1.DataKeys[dlic[i].ItemIndex].ToString());
showBll.DeleteStudent(id1);
}

}
BindDataList();//重新绑定数据库
break;

}
}
}