How to use Gridview Paging inside modal popup in asp.net??

Hi all,

Hope doing well,

sir i am using modal popup to show gridview with paging but when i clicking on second page popup is getting hide.

how to make popup stable so i can get the second page also??

here is my code below:

<asp:UpdatePanel ID="UpModal" runat="server">
    <ContentTemplate>
    <asp:Panel ID="ShowHoliday" runat="server" Width="440px" style="display:none" CssClass="modalPopup">
       
                          <%-- <div style="height: 120px; overflow:auto; width:100%; text-align:center; background-color:White" >--%>
                            <table style="width:100%; height:180px">
                             <tr>
                                <td>
                                <asp:GridView ID="GridView3" OnRowDataBound="GridView3_RowDataBound" PageSize="10" runat="server" Font-Size="Smaller" CellPadding="2" OnPageIndexChanging="GridView3_PageIndexChanging1"
                                    AllowPaging="true" ForeColor="Black" CellSpacing="1" Width="400px" AutoGenerateColumns="false" Visible="true"
                                    BackColor="White">
                                    <Columns>
                                        <asp:BoundField DataField="HolidayName" HeaderText="Holiday Name"/>
                                        <asp:BoundField DataField="HolidayDate" HeaderText="Holiday Date" DataFormatString="{0:dd-MM-yyyy}"/>
                                        <asp:BoundField HeaderText="Day" />
                                    </Columns>
                                    <HeaderStyle HorizontalAlign="Center" />
                                <RowStyle HorizontalAlign="Center" />
                                </asp:GridView>
                                    </td>
                                    <td style="vertical-align:top">
                                         <asp:ImageButton ID="ImageButton2" runat="server" ImageUrl="~/Common/images/CrossImage.jpg"/>
                                    </td>
                                   </tr>
                                </table>
                              
                          <%--  </div>--%>
                        
    </asp:Panel>
    </ContentTemplate>
    </asp:UpdatePanel>
       <ajt:ModalPopupExtender ID="ModalPopupExtender2" BackgroundCssClass="modalBackground" PopupControlID="ShowHoliday" CancelControlID="ImageButton2"  TargetControlID="Lnkholiday" runat="server">
   </ajt:ModalPopupExtender>

and source code below:

 protected void GridView3_PageIndexChanging1(object sender, GridViewPageEventArgs e)
    {
        ModalPopupExtender2.Show();
        GridView3.PageIndex = e.NewPageIndex;
        createdash1();

    }

please help me in this

thanks