关于dropdownlist绑定 [英] About dropdownlist binding

问题描述

我将数据绑定到下拉列表但是当我正在运行时，项目数据会在下拉列表中重复进行...我需要帮助

我的代码：

I bind data to dropdown list But when i am running the project datas are repetedely comining in the dropdown list...I need a help
My code:

<asp:DropDownList ID="drpPurcahseBrand" runat="server" Height="24px"

                                       Width="173px" AppendDataBoundItems="True" AutoPostBack="True">
                                  <asp:ListItem Text="Select Brand" Selected="true"></asp:ListItem>
                                   </asp:DropDownList>

drpPurcahseBrand.DataSource =                        ClassLibrary1.mainclass.dset("brand_name", "");
            drpPurcahseBrand.DataValueField = "Brand";
            drpPurcahseBrand.DataTextField = "Brand";
            DataBind();

Stored Procedure:
ALTER PROCEDURE brand_name
	
AS
	select Brand from Rate
	RETURN

推荐答案

这样做
$ b在绑定数据之前$ b。

Do this
before you bind Data.

drpPurcahseBrand.Items.Clear()

drpPurcahseBrand.Items.Clear（）

drpPurcahseBrand.DataValueField =Brand;

drpPurcahseBrand.DataTextField =Brand;

DataBind（）;

drpPurcahseBrand.Items.Clear()
drpPurcahseBrand.DataValueField = "Brand";
drpPurcahseBrand.DataTextField = "Brand";
DataBind();

将AppendDataBoundItems =True设为false



和代码

set AppendDataBoundItems="True" to false

and in code

drpPurcahseBrand.DataValueField = "Brand";
            drpPurcahseBrand.DataTextField = "Brand";
            DataBind();
ListItem lst = new ListItem ( "Select Brand" , "0" );
drpPurcahseBrand.Items.Add(lst );

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