GridView中dropdownlist数据加载

[Doson]

在页面加载的时候，为什么无法显示每一项dropdownlist的值，比如，我有4条数据，如何让每一条数据的dropdownlist值都显示出来，我是这样写的，但是做不到
#region 绑定登记类别
protected void GvList_RowDataBound(object sender, GridViewRowEventArgs e)
{
//登记类别
DataTable _dtRegisterType = (DataTable)Rick.Common.DataCache.GetCache("LS_RegisterType");
DropDownList ddl = (DropDownList)e.Row.FindControl("ddlRegisterTypeID");
if (ddl != null)
{
ddl.DataSource = _dtRegisterType.DefaultView;
ddl.DataTextField = "RegisterTypeName";
ddl.DataValueField = "PKID";
ddl.DataBind();
ddl.Items.Add(new ListItem("请选择", "请选择"));
ddl.SelectedValue = "请选择";
}

for (int i = 0; i < _dtRegisterType.Rows.Count; i++)
{
DropDownList ddlRegisterType = (DropDownList)e.Row.FindControl("ddlRegisterTypeID");
ddlRegisterType.SelectedIndex = int.Parse(_dtRegisterType.Rows[i]["PKID"].ToString());
break;
}
//登记细类
DataTable _dtRegisterDetail = (DataTable)Rick.Common.DataCache.GetCache("LS_RegisterDetail");
DropDownList ddl2 = (DropDownList)e.Row.FindControl("ddlRegisterDetailID");
if (ddl2 != null)
{
ddl2.DataSource = _dtRegisterDetail.DefaultView;
ddl2.DataTextField = "RegisterDetailType";
ddl2.DataValueField = "PKID";
ddl2.DataBind();
ddl2.Items.Add(new ListItem("请选择", "请选择"));
ddl2.SelectedValue = "请选择";
}




}
#endregion

[pdsnet]

http://hi.baidu.com/l%B7%C9%B5%C4%B8%FC%B8%DF/blog/item/05e87ed8005ebe3032fa1c2c.html

[pdsnet]

<ItemTemplate>
<asp:DropDownList ID="DropDownList1"　datascoure='<%#Bind ()%>' runat="server">

</asp:DropDownList>
</ItemTemplate>

[jiangyu912]

顶一个

[Doson]

<asp:TemplateField HeaderText="登记类别">
<ItemTemplate>
<asp:DropDownList ID="ddlRegisterTypeID" runat="server"
onselectedindexchanged="ddlRegisterTypeID_SelectedIndexChanged"></asp:DropDownList>
</ItemTemplate>
<ItemStyle Width="50px" HorizontalAlign="Center" CssClass="ContentTd2"/>
</asp:TemplateField>

我的前台代码在<ItemTemplate>中，没有selectedvalue属性，怎么办？？

[ivws_19]

在事件里先加上if (e.Row.RowType == DataControlRowType.DataRow)
RowDataBound事件本身就会对gridviewrow进行遍历，你红色部分可以去掉了,ddl.databind()完之后可以直接
ddlRegisterType.selectedvalue=你想要的值

[直男250]

我总觉得写法怪怪的，
为什么处理都写在rowdatabound事件里？每次绑定，都执行一次？
for 循环怎么还有break？