Not able to refresh the grid when in update panel

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Gridview pageindex change event gets fire but its not refresh the grid values,
-Gridview is in modal pop up, therefore i dont want to refresh whole page.

<asp:updatepanel id="UpdatePanel1" runat="server" updatemode="Conditional" childrenastriggers="false">

<contenttemplate>

<asp:gridview id="gvEmployeeList" runat="server" allowpaging="True" autogeneratecolumns="False"
="" cssclass="table table-bordered table-row" emptydatatext="Record not available !!!" headerstyle-height="30" pagesize="5" width="100%" onpageindexchanging="gvEmployeeList_PageIndexChanging" datakeynames="EMP_ID" enablesortingandpagingcallbacks="true">
<columns>
<asp:templatefield headertext="Select">
<headertemplate>
<asp:checkbox id="chkHeaderEmp" runat="server">

<itemtemplate>
<asp:checkbox id="chkChild" runat="server">
<asp:label id="lblId" runat="server" text="<%# Bind("EMP_ID") %>" visible="false">

<itemstyle horizontalalign="Center" verticalalign="Middle">

<asp:templatefield headertext="No." itemstyle-width="20px">
<itemtemplate>
<asp:label runat="server" id="lblSlNo"><%# Container.DataItemIndex + 1 %>

<headerstyle horizontalalign="Left">
<itemstyle horizontalalign="Left">

<asp:templatefield>
<headertemplate>
Employee Name

<itemtemplate>
<asp:label id="lblFullName" runat="server" text="<%# bind("EMP_NAME") %>">

<asp:templatefield headertext="Department" itemstyle-width="20px">
<itemtemplate>
<asp:label id="lblDPT_DESCR" runat="server" text="<%# Bind("DPT_DESCR")%>">
<asp:label id="lblDPT_ID" runat="server" text="<%# Bind("DPT_ID")%>" visible="false">

<headerstyle horizontalalign="Left">
<itemstyle horizontalalign="Left">

<asp:templatefield headertext="Include in Workflow" itemstyle-width="20px">
<itemtemplate>
<asp:checkbox id="chkIncludeInWorkFlow" runat="server">

<headerstyle horizontalalign="Left">
<itemstyle horizontalalign="Left">

<rowstyle cssclass="griditem" height="25px">
<selectedrowstyle backcolor="Aqua">
<headerstyle cssclass="gridheader_pop" height="25px">
<alternatingrowstyle cssclass="griditem_alternative">

<triggers>
<asp:asyncpostbacktrigger controlid="gvEmployeeList" eventname="PageIndexChanging">

-----------------Code behind------------

Protected Sub gvEmployeeList_PageIndexChanging(ByVal sender As Object, ByVal e As System.Web.UI.WebControls.GridViewPageEventArgs)
gvEmployeeList.PageIndex = e.NewPageIndex
bindEmployeeGrid_More()

UpdatePanel1.Update()
End Sub

What I have tried:

I tried almost everything. I tried many option available with update panel and gridview properties.

Posted 10-Apr-19 22:35pm

Member 14161968

Updated 11-Apr-19 8:42am

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Vincent Maverick Durano 11-Apr-19 13:46pm

How are you binding the GridView on initial load?

1 solution

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Vincent Maverick Durano · Answer 1 · 2019-04-11T08:42:00

Try to do the following:

1. Remove the ChildrenAsTrigger="false" in your UpdatePanel.
2. Remove the <trigger> declaration.
3. Remove the UpdatePanel1.Update() method.

The basic idea is to just wrap your GridView and Modal declaration inside UpdatePanel control. For example:

ASP.NET

<asp:Button ID="hiddenButton" runat="server" Text="" style="display:none;" />
    <ajaxToolkit:ModalPopupExtender ID="ModalPopupExtender1" runat="server" Enabled="True" TargetControlID="hiddenButton" PopupControlID="upModal" BehaviorID="modalbehavior" BackgroundCssClass="modalBackground"  OnCancelScript="cancelClick();" CancelControlID="closePopup">
    </ajaxToolkit:ModalPopupExtender>

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

            <asp:Panel id="pnlPopup" runat="server" class="ModalPanel" >

                <table cellpadding="5" cellspacing="5" class="topBanner" style="width:100%;">
                    <tr>
                        <td width="50">
                            <asp:LinkButton ID="closePopup" runat="server" onclick="LinkButton1_Click" CssClass="ClosePopupCls">Close 
                            [x]</asp:LinkButton>
                        </td>
                        <td align="center">
                            <asp:Label ID="lbl" runat="server" Text="Status"></asp:Label>
                        </td>
                        <td width="25">
                        </td>
                    </tr>
                    <tr>
                        <td colspan="3">
                            <asp:GridView ID="gvRecords" runat="server" AllowPaging="True" 
                                BackColor="White" EmptyDataText="No Record Found" 
                                EnableSortingAndPagingCallbacks="True" ForeColor="GrayText" Height="600" 
                                onpageindexchanging="gvRecords_PageIndexChanging" Width="800">
                            </asp:GridView>
                        </td>
                    </tr>
                </table>
            </asp:Panel>

        </ContentTemplate>
    </asp:UpdatePanel>

Then to open the GridView, you could do something like this (Note that this is in C#):

C#

protected void btnShowGridView_Click(object sender, EventArgs e)
{
    ModalPopupExtender1.Show();
    BindData();
}

Your PageIndexChanging event would be like this:

C#

protected void gvRecords_PageIndexChanging(object sender, GridViewPageEventArgs e)
{
    gvRecords.PageIndex = e.NewPageIndex;
    BindData();
}