Question

我的转发器中有嵌入式gridview。在转发器itemdatabound上我绑定gridview并尝试检索将在gridviewfooters中显示的总数，但是，总计不起作用，我缺少什么？请有人帮忙干杯

 <asp:Repeater ID="rpt" runat="server"  onitemdatabound="rpt_ItemDataBound" >
        <HeaderTemplate>
            <table>
                <tr>
                    <td>
                        <asp:Label ID="lblName" runat="server" ClientIDMode="Static"></asp:Label>
                    </td>
                    <td>
                        <asp:Label ID="lblAddress" runat="server" ClientIDMode="Static"></asp:Label>
                    </td>
                </tr>
            </table>
        </HeaderTemplate>
        <ItemTemplate>
         <asp:HiddenField ID="hfID" runat="server" Value='<%# DataBinder.Eval(Container, "DataItem.link_id") %>' />
         <asp:GridView ID="grd" ClientIDMode="Static" runat="server" 
                Width="100%" DataKeyNames="ID" AutoGenerateColumns="False" GridLines="Vertical"
                CellPadding="4" AllowPaging="True" AllowCustomPaging="True" PageSize="25" PagerStyle-Visible="False"
                 ShowFooter="true"  OnRowDataBound="grd_RowDataBound">
                <Columns>
                    <asp:TemplateField>
                        <ItemTemplate>
                            <asp:HiddenField ID="hfID" runat="server"  ClientIDMode="Static" Value='<%# DataBinder.Eval(Container,"DataItem.id") %>' />
                        </ItemTemplate>
                    </asp:TemplateField>
                    <asp:BoundField HeaderText="code" DataField="code" />
                    <asp:BoundField HeaderText="Description" DataField="desc" />
                    <asp:BoundField HeaderText="Qty" DataField="quantity" />
                    <asp:BoundField HeaderText="Employee Paid" DataField="e_total" />
                    <asp:BoundField HeaderText="Client Charged" DataField="c_total" />
                </Columns>
            </asp:GridView>
        </ItemTemplate>
    </asp:Repeater>

背后的代码

 double dEmpTotal = 0;
        double dClientTotal = 0;
        protected void rpt_ItemDataBound(object sender, RepeaterItemEventArgs e)
        {
            if (e.Item.ItemType == ListItemType.AlternatingItem || e.Item.ItemType == ListItemType.Item)
            {
                int ID = int.Parse(((HiddenField)e.Item.FindControl("hfID")).Value);

                GridView grd = (GridView)e.Item.FindControl("grd");
                DataContext dc = new DataContext(ConfigurationManager.ConnectionStrings["DB"].ConnectionString);

                var qry = from p in dc.usp_list_costs(ID)
                          select p;


                List<usp_list_costsResult> lstCosts = new List<usp_list_costsResult>();
                lstCosts = qry.ToList();
                double dEmpTotal = Convert.ToDouble(lstCosts.Sum(r => r.emp_total));
                double dClientTotal = Convert.ToDouble(lstCosts.Sum(r => r.client_total));
                grd.DataSource = lstCosts;
                grd.DataBind();
            }
        }
        protected void grd_RowDataBound(object sender, GridViewRowEventArgs e)
        {


            if (e.Row.RowType == DataControlRowType.Footer)
            {
                e.Row.Cells[4].Text = "Employee Total:" + dEmpTotal;
                e.Row.Cells[5].Text = "Client Total:" + dClientTotal;
            }

        }

Answer 1

我假设您的总数始终为零，因为您在处理行类型为Footer的grd_RowDataBound时尝试获取dEmpTotal和dClientTotal值，但此时值已设置为零。 / p>

您必须在rpt_ItemDataBound事件处理程序中将数据绑定到转发器项时设置总值。

因此您根本不需要在grd_RowDataBound方法中设置页脚行的值。

代码应该是这样的（只是将最后两行添加为我的示例代码）

protected void rpt_ItemDataBound(object sender, RepeaterItemEventArgs e)
{
    if (e.Item.ItemType == ListItemType.AlternatingItem || e.Item.ItemType == ListItemType.Item)
    {
        int ID = int.Parse(((HiddenField)e.Item.FindControl("hfID")).Value);

        GridView grd = (GridView)e.Item.FindControl("grd");
        DataContext dc = new DataContext(ConfigurationManager.ConnectionStrings["DB"].ConnectionString);

        var qry = from p in dc.usp_list_costs(ID)
                    select p;


        List<usp_list_costsResult> lstCosts = new List<usp_list_costsResult>();
        lstCosts = qry.ToList();
        double dEmpTotal = Convert.ToDouble(lstCosts.Sum(r => r.emp_total));
        double dClientTotal = Convert.ToDouble(lstCosts.Sum(r => r.client_total));
        grd.DataSource = lstCosts;
        grd.DataBind();

        grd.FooterRow.Cells[4].Text = "Employee Total:" + dEmpTotal;
        grd.FooterRow.Cells[5].Text = "Client Total:" + dClientTotal;
    }
}

在转发器中的gridview总数绑定不起作用

1 个答案: