DropDownList的数据绑定方式

第一种:
DataSet   ds=   new   DataSet();
ds   =   cls2.SelectOle();
DropDownList1.DataSource   =   ds.Tables["My"].DefaultView;
DropDownList1.DataTextField   =   "dep_Name";
DropDownList1.DataValueField   =   "dep_Id";
DropDownList1.DataBind();

第二种：

DataSet   set1=   new   DataSet();
set1   =   cls2.SelectOle();
for   (int   num1   =   0;   num1   <   set1.Tables["My"].Rows.Count;   num1++)
{
DropDownList1.Items.Add(set1.Tables["My"].Rows[num1][1].ToString());
}

<asp:DropDownList   id="DropDownList1"     DataValueField="dep_Id"   DataTextField="dep_Name"   runat="server"></asp:DropDownList>