ページングは​​

Question

こんにちは選択する上で

<asp:Panel CssClass="grid" ID="pnlCust" runat="server"> 
    <asp:UpdatePanel ID="pnlUpdate" runat="server"> 
     <ContentTemplate> 
      <asp:GridView AllowPaging="True" ID="gvCustomers" AutoGenerateColumns="False" DataKeyNames="EmpID" 
       runat="server" ShowHeader="true" BackColor="White" BorderColor="#DEDFDE" BorderStyle="None" 
       BorderWidth="1px" CellPadding="4" ForeColor="Black" GridLines="Vertical" > 
       <AlternatingRowStyle BackColor="White" /> 
       <Columns> 
        <asp:TemplateField> 
         <ItemTemplate> 
          <asp:Panel CssClass="group" ID="pnlCustomer" runat="server"> 
           <%--<asp:Image ID="imgCollapsible" CssClass="first" ImageUrl="~/Assets/img/plus.png" 
            Style="margin-right: 5px;" runat="server" /><span class="header"> 
             <%#Eval("EmpID")%> 
             : 
             <%#Eval("empname")%>--%> 
           <asp:RadioButton ID="rdbtn" runat="server" onclick="RadioCheck(this);" OnCheckedChanged="radio_changed" Text='<%# Bind("EmpID") %>' 
            AutoPostBack="true"></asp:RadioButton> 
          </asp:Panel> 
          <asp:Panel Style="margin-left: 20px; margin-right: 20px" ID="pnlOrders" runat="server"> 
           <asp:GridView AutoGenerateColumns="false" CssClass="grid" ID="gvOrders" runat="server" 
            PageSize="1" ShowHeader="true" EnableViewState="false" DataKeyNames="EmpID" AllowPaging="true" 
            OnPageIndexChanging="gvOrders_PageIndexChanging"> 
            <RowStyle CssClass="row" /> 
            <AlternatingRowStyle CssClass="altrow" /> 
            <Columns> 
             <asp:BoundField HeaderText="Employee Id" DataField="EmpID"> 
              <ItemStyle HorizontalAlign="Center" Width="100px" /> 
             </asp:BoundField> 
             <asp:TemplateField ItemStyle-CssClass="rownum"> 
              <ItemTemplate> 
               <%# Container.DataItemIndex + 1 %> 
              </ItemTemplate> 
             </asp:TemplateField> 
             <asp:TemplateField HeaderStyle-BackColor="#EFF1F1" ItemStyle-HorizontalAlign="Center" 
              ItemStyle-Height="25" HeaderStyle-Width="50" ItemStyle-Width="50"> 
              <HeaderTemplate> 
               <input id="chkBoxAll" type="checkbox" onclick="checkAllBoxes()" /> 
              </HeaderTemplate> 
              <ItemTemplate> 
               <asp:CheckBox ID="chkBoxChild" runat="server" /> 
              </ItemTemplate> 
             </asp:TemplateField> 
             <asp:BoundField DataField="PayPeriodNumber" HeaderText="PayPeriod" HeaderStyle-BackColor="#EFF1F1" 
              ItemStyle-HorizontalAlign="Center" HeaderStyle-Width="80" ItemStyle-Width="80"> 
             </asp:BoundField> 
             <asp:BoundField DataField="PayRollYear" HeaderText="Payroll Year" HeaderStyle-BackColor="#EFF1F1" 
              ItemStyle-HorizontalAlign="Center" HeaderStyle-Width="100" ItemStyle-Width="100"> 
             </asp:BoundField> 
             <asp:BoundField DataField="PaymentDate" HeaderText="Payment Date" HeaderStyle-BackColor="#EFF1F1" 
              ItemStyle-HorizontalAlign="Center" HeaderStyle-Width="110" ItemStyle-Width="110"> 
             </asp:BoundField> 
            </Columns> 
           </asp:GridView> 
          </asp:Panel> 

         </ItemTemplate> 
        </asp:TemplateField> 
       </Columns> 
       <FooterStyle BackColor="#CCCC99" /> 
       <HeaderStyle BackColor="#6B696B" Font-Bold="True" ForeColor="White" /> 
       <PagerStyle BackColor="#F7F7DE" ForeColor="Black" HorizontalAlign="Right" /> 
       <RowStyle BackColor="#F7F7DE" /> 
       <SelectedRowStyle BackColor="#CE5D5A" Font-Bold="True" ForeColor="White" /> 
       <SortedAscendingCellStyle BackColor="#FBFBF2" /> 
       <SortedAscendingHeaderStyle BackColor="#848384" /> 
       <SortedDescendingCellStyle BackColor="#EAEAD3" /> 
       <SortedDescendingHeaderStyle BackColor="#575357" /> 
      </asp:GridView> 
     </ContentTemplate> 
    </asp:UpdatePanel> 
</asp:Panel> 

そのページ上の負荷の画像

を次のようにネストされたgridview私のデザインがあると私はプログラムをやっているすべての作業ではありませんラジオボタンの1つに、対応する従業員の詳細を次のように表示します。

protected void gvOrders_PageIndexChanging(object sender, GridViewPageEventArgs e) 
{ 
    GridView gvwChild = (GridView)sender; 
    //GridViewRow gvRowParent = ((System.Web.UI.WebControls.GridView)sender).Parent as GridViewRow; 
    GridViewRow gvRowParent = gvwChild.Parent as GridViewRow; 
    gvwChild.PageIndex = e.NewPageIndex; 
    if (Session["ChildPageIndex"] != null) 
    { 
     DataTable dtPageIndex = (DataTable)Session["ChildPageIndex"]; 
     dtPageIndex.Rows[gvRowParent.RowIndex][1] = e.NewPageIndex; // *I am getting error here as Object reference not set to an Object can any one tell where I went wrong* 
    } 
    BindChildGrdView(gvCustomers.DataKeys[gvRowParent.RowIndex].Value.ToString(), gvwChild); 

} 

Stack Trace

at _Default.gvOrders_PageIndexChanging(Object sender, GridViewPageEventArgs e) in d:\Projects\GridView-Collapsible\GridView-Collapsible\Default.aspx.cs:line 54 at System.Web.UI.WebControls.GridView.OnPageIndexChanging(GridViewPageEventArgs e) at System.Web.UI.WebControls.GridView.HandlePage(Int32 newPage) at System.Web.UI.WebControls.GridView.HandleEvent(EventArgs e, Boolean causesValidation, String validationGroup) at System.Web.UI.WebControls.GridView.RaisePostBackEvent(String eventArgument) at System.Web.UI.WebControls.GridView.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) at System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) at System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) at System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint)

Answer 1

を次のようにこれはあなたを助けることがあるGridViewの子の

if (!Page.IsPostBack) 
{ 
    GridViewChildPageIndex(); 
    } 

private void GridViewChildPageIndex() 
{ 
    DataTable dtPageIndex = new DataTable(); 
    dtPageIndex.Columns.Add("PageIndex", typeof(int)); 
    for (int i = 0; i < gvCustomers.Rows.Count; i++) 
    { 
     dtPageIndex.Rows.Add("0"); 
    } 
    Session["ChildPageIndex"] = dtPageIndex; 
} 

ページングコードは次のように私は、GridViewコントロールのページングを書かれています： gvOrders_PageIndexChang機能をINGの、

GridViewRow gvRowParent = gvwChild.Parent.Parent as GridViewRow; 

そして、もし条件

if (Session["ChildPageIndex"] != null) 
{ 
    DataTable dtPageIndex = (DataTable)Session["ChildPageIndex"]; 
    dtPageIndex.Rows[gvRowParent.RowIndex][0] = e.NewPageIndex; // *I am getting error here as Object reference not set to an Object can any one tell where I went wrong* 
} 

も内側を使用しますが、デバッグとgvRowParentは、この関数の2行目のオブジェクトのインスタンスであるかどうかを確認できます。