-将DropDownList控件绑定 到GridView控当中,并调用方法给DropDownList控件在页面进行数据绑定

----------------------------------------------------页面-----------------------------------------------------------

<asp:TemplateField HeaderText="销售情况">

<ItemTemplate>

<asp:DropDownList ID="SellState" runat="server" DataSource='<%# ddlbind()%>'

DataValueFiled="SellState" DataTextFiled="SellState" OnSelectedChanged="DropDownList_SelectedChanged"

AutoPostBack="true">

</asp:DropDownList>

</ItemTemplate>

</asp:TemplateField>

//后台查询方法

public SqlDataReader ddlbind()

{

string strsql="select distinct SellState from Sellbook";

SqlConnection conn = GetConnection();

SqlCommand cmd = new SqlCommand(strsql,conn);

cmd.open();

return cmd.ExecuteReader();

}