嵌套repeater的问题

yanbinquan 2010-10-21 04:29:28

按照google回来的方法



        if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)

        {

            Repeater rpColumnNews = (Repeater)e.Item.FindControl("rpp1");

            //找到分类Repeater关联的数据项 

            DataRowView rowv = (DataRowView)e.Item.DataItem;

            //提取分类ID 

            int sid = Convert.ToInt32(newRow["id"]);

            title model = new title();

            DataSet dr = model.Gettitle(sid);

            DataTable da = dr.Tables[0];

            rpColumnNews.DataSource = da;

            rpColumnNews.DataBind();

        }

if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem) 跳过，不执行。
把if注释之后，
int sid = Convert.ToInt32(newRow["id"]);这里出现“未将对象引用设置到对象的实例”的错误怎么解决尼

...全文

248 17 打赏收藏转发到动态举报

写回复

用AI写文章

17 条回复

切换为时间正序

请发表友善的回复…

发表回复

李小冲 2010-10-22

打赏
举报

C# repeater 嵌套我经常使用的方法，先给外层的repeater一个datatable,然后再给里面的e.Item.FindControl("子repeater")赋值，基本思路是这样的，下面的是C# repeater 嵌套的DEMO：
http://cn.ziddu.com/download/542793/c_repeater.rar.html

cys1016116747 2010-10-22

打赏
举报

打断点调一下看看 DataSet dr = model.Gettitle(sid);DataTable da = dr.Tables[0];你这两数据集里面把数据传传过来吗？

hookyzlr 2010-10-21

打赏
举报

你这句话：int sid = Convert.ToInt32(newRow["id"]);
newRow是哪里来的啊？
改成rowv就对了。

tourstar 2010-10-21

打赏
举报



protected void RepeaterShopping_ItemDataBound(object sender, RepeaterItemEventArgs e)

        {

            if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)

            {

                Repeater RepeaterProduct = (Repeater)e.Item.FindControl("RepeaterProduct");

                string SellMemberID = DataBinder.Eval(e.Item.DataItem, "SellMemberID").ToString();

                var ProductLinq = (from ShoppingCartEntity in this.ShoppingDetailList

                                   where ShoppingCartEntity.SellMemberID == SellMemberID

                                   select new { ProductID = ShoppingCartEntity.ProductID, UserName = ShoppingCartEntity.UserName, ProductImg = ShoppingCartEntity.ProductImg, ProductName = ShoppingCartEntity.ProductName, SellMemberID=ShoppingCartEntity.SellMemberID }

                                   ).Distinct();

                RepeaterProduct.DataSource = ProductLinq.ToList();

                RepeaterProduct.DataBind();

            }

        }

beyond_me21 2010-10-21

打赏
举报

<asp:Repeater ID="repeater101" runat="Server" OnItemDataBound="repeater102_ItemDataBound">
你没指定外层数据行绑定事件当然就不执行了

wuyq11 2010-10-21

打赏
举报

protected void rptTop_ItemDataBound(object sender, RepeaterItemEventArgs e)
{
if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
{
Repeater rpt = (Repeater)e.Item.FindControl("rptchild");
T t= (T)e.Item.DataItem;

}

}

xiesiren 2010-10-21

打赏
举报

<asp:Repeater ID="repeater101" runat="Server" OnItemDataBound="repeater102_ItemDataBound">

Tanhualin 2010-10-21

打赏
举报

Rrpeater嵌套例子，你看看吧



protected void RepeaterShopping_ItemDataBound(object sender, RepeaterItemEventArgs e)

        {

            if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)

            {

                Repeater RepeaterProduct = (Repeater)e.Item.FindControl("RepeaterProduct");

                string SellMemberID = DataBinder.Eval(e.Item.DataItem, "SellMemberID").ToString();

                var ProductLinq = (from ShoppingCartEntity in this.ShoppingDetailList

                                   where ShoppingCartEntity.SellMemberID == SellMemberID

                                   select new { ProductID = ShoppingCartEntity.ProductID, UserName = ShoppingCartEntity.UserName, ProductImg = ShoppingCartEntity.ProductImg, ProductName = ShoppingCartEntity.ProductName, SellMemberID=ShoppingCartEntity.SellMemberID }

                                   ).Distinct();

                RepeaterProduct.DataSource = ProductLinq.ToList();

                RepeaterProduct.DataBind();

            }

        }

xiesiren 2010-10-21

打赏
举报

楼主你的第一个repeater没引用事件啊

Tanhualin 2010-10-21

打赏
举报

没看明白，但是if是不能注掉的

yanbinquan 2010-10-21

打赏
举报

补上页面代码



<div>

  <ul>

    <asp:Repeater ID="repeater101" runat="Server">

       <ItemTemplate>

          <li style="list-style-type:none">

            <div class="t3" ><A href="ProductList.aspx?type=<%#Eval("id") %>"> <%#Eval("clsname")%></A></div>

               <asp:Repeater ID="rpp1" runat="Server">

                  <ItemTemplate>

                    <li>

                      <A href="ProductList.aspx?type=<%#Eval("id") %>"> <%#Eval("clsname")%></A>

                    </li>

                     </ItemTemplate>

                   </asp:Repeater>

                </li>

              </ItemTemplate>

             </asp:Repeater>

           </ul>

    </div>

shaoliang520xi 2010-10-21

打赏
举报

if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
{
是因为你帮的数据要是在Item和交集数据项。。

int sid = Convert.ToInt32(newRow["id"]);这里出现“未将对象引用设置到对象的实例”的错误怎么解决尼

是因为你的数据源里没有ID这个数据。。我怀疑是你没有数据的关系。没绑定成功！

xiesiren 2010-10-21

打赏
举报

楼主把你的页面代码页拿出来吧

szhda4le 2010-10-21

打赏
举报

写错了我以为你加载时候出错呢

szhda4le 2010-10-21

打赏
举报

循环rpp1绑定

yanbinquan 2010-10-21

打赏
举报

[Quote=引用 1 楼 yellowmandog 的回复:]

你这是什么事件啊？都看不到，是Repeater的还是别的？
[/Quote]

protected void repeater102_ItemDataBound(object sender, RepeaterItemEventArgs e)
{
//if (e.Item.ItemType == ListItemType.Item || e.Item.ItemType == ListItemType.AlternatingItem)
//{
Repeater rpColumnNews = (Repeater)e.Item.FindControl("rpp1");
//找到分类Repeater关联的数据项
DataRowView rowv = (DataRowView)e.Item.DataItem;
//提取分类ID
int sid = Convert.ToInt32(rowv["id"]);
title model = new title();
DataSet dr = model.Gettitle(sid);
DataTable da = dr.Tables[0];
rpColumnNews.DataSource = da;
rpColumnNews.DataBind();
//}

}