请高手指教！用DropDownList控件显示数据库的内容，调试程序时内容无法显示！

Question

DropDownList1 的 AutoPostBack 属性的值改为 true

Answer 1

this.DropDownList1.DataSource = ds.Tables["a"];
这样看可以吗

Answer 2

用reader來做看看:
Sub DropDownList_BindGrid()
    CmdSelect=new OleDbCommand("select * from class order by id",MyConnection)
    MyConnection.Open()
dtrReader=CmdSelect.ExecuteReader() dropnews.DataSource=dtrReader
dropnews.DataTextField="bigclass"
dropnews.DataValueField="bigclassid"
dropnews.DataBind()
dropnews.Items.Insert(0,new ListItem("½Ð¿ï¾Ü",-1))
dtrReader.Close()
MyConnection.Close()
End Sub