在DataGrid中加入DropDownList:
<asp:TemplateColumn HeaderText="au_lname">
<itemtemplate>
<asp:Label runat="server"
Text='<%# DataBinder.Eval(Container.DataItem, "au_lname") %>'/>
</itemtemplate>
<edititemtemplate>
<asp:DropDownList runat="server"
DataSource='<%# GetDataTable1() %>'
DataTextField="au_lname"
];
return dt;
}