asp.net 数据绑定的实例代码

复制代码 代码如下:

public partial class _Default : System.Web.UI.Page
{
    protected string + this.DropDownList1.SelectedValue + "'";
                SqlDataAdapter adapter = new SqlDataAdapter(sqlCmm);
                adapter.Fill(ds);
                this.DropDownList2.DataSource = ds.Tables[0];
                this.DropDownList2.DataTextField = "cityname";
                this.DropDownList2.DataValueField = "cityid";
                this.DropDownList2.DataBind();
            }
        }
    }//实现省市二级联动
}