PageIndexChanging在asp.net中

Question

我有一个关于pageIndexChanging方法的问题。 我的代码不会进入pageindexchanging方法。 我添加了updatePanel，但它仍然不起作用。 你有什么想法吗？

我的代码是

 <asp:UpdatePanel ID="updatePanel" runat="server"> 

     <ContentTemplate> 

     <asp:GridView ID="grdEmp" runat="server" AllowSorting="True" EmptyDataText="No records found" 
      CssClass="table table-striped table-bordered" RowStyle-CssClass="rowHover" ShowHeader="true" OnRowCommand="grdEmp_RowCommand" 
      AutoGenerateColumns="False" 
      AllowPaging="True" 
      OnPageIndexChanging="grdEmp_PageIndexChanging" 
      PageSize="20" 

      CellPadding="2" ForeColor="#333333" 
      GridLines="None" Width="100%"> 
      <AlternatingRowStyle BackColor="White" ForeColor="#284775" /> 

      <Columns> 
       <asp:BoundField HeaderText="Movie" DataField="name" ItemStyle-HorizontalAlign="Center" ItemStyle-VerticalAlign="Middle" /> 
       <asp:BoundField HeaderText="Director" DataField="director" ItemStyle-HorizontalAlign="Center" ItemStyle-VerticalAlign="Middle" /> 
       <asp:BoundField HeaderText="Genre" DataField="genre" ItemStyle-HorizontalAlign="Center" ItemStyle-VerticalAlign="Middle" /> 
       <asp:BoundField HeaderText="Year" DataField="year" ItemStyle-HorizontalAlign="Center" ItemStyle-VerticalAlign="Middle" /> 
       <asp:ButtonField HeaderText="" ItemStyle-HorizontalAlign="Center" ItemStyle-VerticalAlign="Middle" ButtonType="Button" ControlStyle-CssClass="btn btn-default" Text="Like" CommandName="like" /> 
      </Columns> 
      <EditRowStyle BackColor="#999999" /> 
      <FooterStyle BackColor="#ffffff" Font-Bold="True" ForeColor="Red" /> 
      <HeaderStyle BackColor="#5D7B9D" Font-Bold="True" ForeColor="White" /> 
      <PagerStyle BackColor="#284775" ForeColor="White" HorizontalAlign="Center" /> 
      <RowStyle CssClass="rowHover" BackColor="#F7F6F3" ForeColor="#333333"></RowStyle> 
      <SelectedRowStyle BackColor="#E2DED6" Font-Bold="True" ForeColor="#333333" /> 
      <SortedAscendingCellStyle BackColor="#E9E7E2" /> 
      <SortedAscendingHeaderStyle BackColor="#506C8C" /> 
      <SortedDescendingCellStyle BackColor="#FFFDF8" /> 
      <SortedDescendingHeaderStyle BackColor="#6F8DAE" /> 
      <EmptyDataRowStyle Width="550px" ForeColor="Red" Font-Bold="true" 
       HorizontalAlign="Center" /> 
     </asp:GridView> 

      </ContentTemplate> 
      </asp:UpdatePanel> 

---

protected void grdEmp_PageIndexChanging(object sender, 
    GridViewPageEventArgs e) 
    { 
     grdEmp.PageIndex = e.NewPageIndex; 
     BindMoviesGrid(); 
    } 

Answer 1

您可以指定的UpdateMode为Conditional更新面板上，然后指定与PostBackTrigger或AsyncPostBackTrigger一个触发部分。

<asp:UpdatePanel ID="upnlReg" runat="server" UpdateMode="Conditional"> 
       <ContentTemplate> 

    </ContentTemplate> 
       <Triggers> 
        <asp:PostBackTrigger ControlID="grdEmp" /> 

       </Triggers> 
       </asp:UpdatePanel>