gridview中dropdownlist的selectvalue问题 急

[赤膊超人]

gridview已经绑定数据，其中有一列使用模板，模板中添加dropdownlist控件也绑定了数据。在page_load的时候给dropdownlist选中值，值是从gridview的数据源中得来的如何操作？

<asp:GridView ID="gridviewcd" runat="server" AutoGenerateColumns="False" PageSize="20"
CellPadding="4" DataSourceID="ds" ForeColor="#333333" GridLines="None"
AllowPaging="True" AllowSorting="True" >
<RowStyle BackColor="#F7F6F3" ForeColor="#333333" />
<Columns>
<asp:BoundField DataField="id" HeaderText="序号" InsertVisible="False"
ReadOnly="True" SortExpression="id" />
<asp:HyperLinkField DataNavigateUrlFields="id"
DataNavigateUrlFormatString="customerdetail.aspx?id={0}"
DataTextField="imoAccount" HeaderText="imo号"
NavigateUrl="~/web/customerdetail.aspx" SortExpression="imoAccount"
Target="mainframe" />

<asp:BoundField DataField="companyName" HeaderText="名称"
SortExpression="companyName" />
<asp:BoundField DataField="customerStatus" HeaderText="状态"
SortExpression="customerStatus" />
<asp:BoundField DataField="buyNum" HeaderText="购买条数"
SortExpression="buyNum" />
<asp:BoundField DataField="organizationNum" HeaderText="组织架构数"
SortExpression="organizationNum" />
<asp:BoundField DataField="onlineNum" HeaderText="人数"
SortExpression="onlineNum" />
<asp:BoundField DataField="a" HeaderText="剩余条数"
SortExpression="a" />
<asp:BoundField DataField="faxExpire" HeaderText="传真时间"
SortExpression="faxExpire" DataFormatString="{0:d}" />

<asp:TemplateField HeaderText="客服">
<ItemTemplate>
<asp:DropDownList ID="ddl" runat="server" DataSourceID="ddlds"
DataTextField="a" DataValueField="id" >
</asp:DropDownList>
<asp:SqlDataSource ID="ddlds" runat="server"
ConnectionString="<%$ ConnectionStrings:connectionStrings %>"
SelectCommand="SELECT [id], [csName]+[csAccount] as a FROM [customservice] ORDER BY [id]">
</asp:SqlDataSource>
</ItemTemplate>
</asp:TemplateField>

</Columns>
</asp:GridView>

<asp:SqlDataSource ID="ds" runat="server"
ConnectionString="<%$ ConnectionStrings:connectionStrings %>"
ProviderName="System.Data.SqlClient"
SelectCommand="">
</asp:SqlDataSource>

[赤膊超人]

for (int i = 0; i < gridviewcd.Rows.Count; i++)
{
DropDownList ddl = gridviewcd.Rows[i].FindControl("ddl") as DropDownList;
ddl.SelectedValue = gridviewcd.Rows[i].Cells[9].Text;
}

[赤膊超人]

编辑模板中编辑dataBindings只有自定义绑定，如何是好

[wuyq11]

protected void gv_RowDataBound(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowIndex != -1)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
DropDownList ddl=e.Row.FindControl("DropDownList1") as DropDownList;
ddl.SelectedValue="";
}
}
}