Question

以下是我的gridview：

    <asp:GridView ID="gv_TotalAllReg" runat="server"  AutoGenerateColumns="false" OnRowDataBound="gv_TotalAllReg_RowDataBound" DataKeyNames="dt" CssClass="table table-bordered table-striped">
                <Columns>
                    <asp:TemplateField HeaderText="Sno" HeaderStyle-BackColor="#f1f1f1">
                        <ItemTemplate>
                            <%# Container.DataItemIndex + 1 %>
                        </ItemTemplate>
                    </asp:TemplateField>
                    <asp:BoundField DataField="dt" DataFormatString="{0:MM-dd-yyyy}" HeaderText="Date" />
                    <asp:TemplateField HeaderText="New Registrations">
                        <ItemTemplate>
                            <asp:Label ID="lbl_Registrations" runat="server"></asp:Label>
                        </ItemTemplate>
                    </asp:TemplateField>
                       <asp:TemplateField HeaderText="Cumulative Registrations">
                        <ItemTemplate>
                            <asp:Label ID="lbl_CumulativeRegistrations" runat="server"></asp:Label>
                        </ItemTemplate>

                </Columns>
            </asp:GridView>

我正在显示日期明智的新注册，但我需要基于新注册的累积注册：

 Sno    Date           New Registrations      Cumulative Registrations
  1     12-23-2016          2
  2     12-24-2016          6
  3     12-25-2016          1

我需要输出如下，累积注册意味着我已经为2016年12月23日至25日的显示日期创建了一个功能。所以根据日期获得新的注册，我也希望显示基于新注册的累积注册，基于新的注册添加暨注册以及如何在RowDataBound中实现暨注册。

 Sno    Date           New Registrations      Cumulative Registrations
  1     12-23-2016          2                         2
  2     12-24-2016          6                         8
  3     12-25-2016          1                         9

下面是我的RowDataBound代码。

protected void gv_TotalAllReg_RowDataBound(object sender, GridViewRowEventArgs e)
{

    if (e.Row.RowType == DataControlRowType.DataRow)
    {

     // e.Row.Cells.add(count.tostring());



        string Registration = string.Empty, Innovation = string.Empty;
        string daildate = gv_TotalAllReg.DataKeys[e.Row.RowIndex].Values[0].ToString(); 



        bo.Para1 = daildate;

        DataTable dt = bl.Get_DailyReport(bo);
        ((Label)e.Row.FindControl("lbl_Registrations")).Text = dt.Rows[0]["newregistrations"].ToString();

  // my cum reg label     ((Label)e.Row.FindControl("lbl_CumulativeRegistrations")).Text

        }

       }

我在gridview中为日期列编写了单独的函数，并在页面加载时调用了该方法。

Answer 1

我认为你正在寻找这样的东西。它使用OnRowDataBound事件将当前行注册计数添加到总计中，并将当前总计写入行中的标签。

int total = 0;
protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e)
{
    if (e.Row.RowType == DataControlRowType.DataRow)
    {
        //cast the current row to a datarowview
        DataRowView row = e.Row.DataItem as DataRowView;

        //add the registrations to the total
        total += Convert.ToInt32(row["Registrations"]);

        //find the label in the row with findcontrol and cast it back to one
        Label label = e.Row.FindControl("lbl_CumulativeRegistrations") as Label;

        //fill the label with the current total
        label.Text = string.Format("{0:N0}", total);
    }
}

如何使用ASP.NET C＃在Gidview RowDataBound中执行SUM Total

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