[Solved] ASP.Net GridView RowCommand: AJAX ModalPopupExtender is not opening

Dear Sir,

I want to use gridview within ModalPopupExtender. gridview is showing information but when i press SELECT button from gridview it is not showing information in textbox and closing ModalPopupExtender.

Please help me

<%-- Start Popup Module For Share --%>
<div class="container p-0 mb-0 mt-0">
    <div class="row p-0 g-0 bg-primary ">
        <div class="col col-12 h-50 bg-primary text-center fs-6 text-white border border-secondary">
            Other Activity
        </div>
    </div>
    <div class=" row p-0 g-0">
        <div class=" col-12 border border-secondary">
            <asp:LinkButton ID="LinkBtnShareValue"
                Text="Share Value" runat="server"
                CssClass="btn btn-warning btn-sm text-black"
                Font-Names="arial" Font-Size="12px"
                ForeColor="Red" OnClick="LinkBtnShareValue_Click">
            </asp:LinkButton>

            <cc1:ModalPopupExtender ID="ModalPopupShareValue" runat="server"
                TargetControlID="LinkBtnShareValue"
                PopupControlID="PnlModalPopupShareValue"
                BackgroundCssClass="modalBackground">
            </cc1:ModalPopupExtender>

            <asp:Panel ID="PnlModalPopupShareValue" runat="server" Width="900px" CssClass="popup" Height="500px">
                <div id="DivModalPopupShareValue" runat="server" style="max-height: 500px; overflow: auto;">
                    <asp:UpdatePanel ID="UpdatePanelModalPopupShareValue" runat="server" UpdateMode="Conditional">
                        <ContentTemplate>
                            <div class="container p-0 g-0">
                                <div class="row p-0 g-0 bg-danger-subtle text-center fs-3 ">
                                    <div class="col col-12 text-center border border-secondary ">
                                        Share Value
                                    </div>
                                </div>
                            </div>
                            <div class="container p-0 g-0">
                                <div class="row p-0 g-0 bg_Rbtn_Row_Color">
                                    <div class="col col-6 text-start border border-secondary ">
                                        <asp:Button ID="BtnLoadInformationShare" CssClass="btn btn-info btn-sm" runat="server" Text="Load Information" OnClick="BtnLoadInformationShare_Click" />
                                    </div>
                                    <div class="col col-3 text-start border border-secondary ">
                                        <asp:Label ID="Label42" runat="server" Text="Selection Type"></asp:Label>
                                    </div>
                                    <div class="col col-3 text-start border border-secondary ">
                                        <asp:Label ID="LblTypePl" runat="server" Text=""></asp:Label>
                                    </div>
                                </div>
                            </div>
                            <div class="container p-0 g-0">
                                <div class=" row p-0 g-0">
                                    <div class="col col-12">
                                        <div class="col col-12 text-black justify-content-center" style="max-height: 200px; overflow: auto;">
                                            <asp:GridView ID="GvShareListPl" runat="server"
                                                GridLines="Both"
                                                EmptyDataText="No Record Found"
                                                EmptyDataRowStyle-ForeColor="Red"
                                                EmptyDataRowStyle-Font-Bold="true"
                                                EmptyDataRowStyle-BorderStyle="None"
                                                CssClass=" MyShareListPlDataGridViewListOne"
                                                HorizontalAlign="Center" OnRowCommand="GvShareListPl_RowCommand"
                                                AllowSorting="true" AutoPostBack="true"
                                                AutoGenerateColumns="false">
                                                <EmptyDataRowStyle BorderStyle="None" Font-Bold="True" ForeColor="Red"></EmptyDataRowStyle>
                                                <FooterStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />
                                                <PagerStyle BackColor="#2461BF" ForeColor="White" HorizontalAlign="Center" />
                                                <HeaderStyle BackColor="Blue" Font-Names="Arial" Font-Size="12px" Font-Bold="True" ForeColor="Blue" />
                                                <RowStyle CssClass="rows Fs-12-User"></RowStyle>

                                                <Columns>

                                                    <asp:TemplateField HeaderText="Sr.No" ItemStyle-Width="20px" ItemStyle-HorizontalAlign="Left">
                                                        <ItemTemplate>
                                                            <asp:Label ID="lblRowNumber" Text='<%# Container.DataItemIndex + 1 %>' runat="server" />
                                                        </ItemTemplate>
                                                        <ItemStyle HorizontalAlign="Left" Width="30px" />
                                                    </asp:TemplateField>

                                                    <asp:TemplateField ItemStyle-HorizontalAlign="Center" HeaderText="Select">
                                                        <ItemTemplate>
                                                            <asp:Button ID="btnSelectItemPl" CssClass="btn btn-primary Button-Height-user" runat="server"
                                                                Text="Select"
                                                                CommandArgument="<%#((GridViewRow)Container).RowIndex%>"
                                                                CommandName="ShareItem" />
                                                        </ItemTemplate>
                                                    </asp:TemplateField>

                                                    <%-- <asp:TemplateField>
<ItemTemplate>
<asp:CheckBox ID="chkSelectItem" runat="server" OnCheckedChanged="chkSelectItem_CheckedChanged" />
</ItemTemplate>
</asp:TemplateField>
                                                    --%>
                                                    <asp:BoundField DataField="Date"
                                                        HeaderText="Date"
                                                        NullDisplayText="Null"
                                                        ReadOnly="True" DataFormatString="{0:dd-MMM-yyyy}"
                                                        ItemStyle-Wrap="false">
                                                        <ItemStyle Wrap="false" />
                                                    </asp:BoundField>

                                                    <asp:BoundField DataField="ItemCode"
                                                        HeaderText="ItemCode"
                                                        NullDisplayText="Null"
                                                        ReadOnly="True"
                                                        ItemStyle-Wrap="false">
                                                        <ItemStyle Wrap="false" />
                                                    </asp:BoundField>
                                                    <asp:BoundField DataField="ItemNo"
                                                        HeaderText="Item No"
                                                        NullDisplayText="Null"
                                                        ReadOnly="True"
                                                        ItemStyle-Wrap="false">
                                                        <ItemStyle Wrap="false" />
                                                    </asp:BoundField>
                                                    <asp:BoundField DataField="ItemDescription"
                                                        HeaderText="Description"
                                                        NullDisplayText="Null"
                                                        ReadOnly="True"
                                                        ItemStyle-Wrap="false">
                                                        <ItemStyle Wrap="false" />
                                                    </asp:BoundField>
                                                    <asp:BoundField DataField="BillTo"
                                                        HeaderText="Bill To"
                                                        NullDisplayText="Null"
                                                        ReadOnly="True"
                                                        ItemStyle-Wrap="false">
                                                        <ItemStyle Wrap="false" />
                                                    </asp:BoundField>
                                                    <asp:BoundField DataField="Qty"
                                                        HeaderText="Qty"
                                                        NullDisplayText="Null"
                                                        ReadOnly="True" DataFormatString="{0:N3}"
                                                        ItemStyle-Wrap="false">
                                                        <ItemStyle Wrap="false" />
                                                    </asp:BoundField>
                                                    <asp:BoundField DataField="UnitCost"
                                                        HeaderText="Unit Cost"
                                                        NullDisplayText="0" ItemStyle-HorizontalAlign="Right"
                                                        ReadOnly="True" DataFormatString="{0:N2}"
                                                        ItemStyle-Wrap="false">
                                                        <ItemStyle Wrap="false" />
                                                    </asp:BoundField>
                                                    <asp:BoundField DataField="UnitPrice"
                                                        HeaderText="Unit Price"
                                                        NullDisplayText="0" ItemStyle-HorizontalAlign="Right"
                                                        ReadOnly="True" DataFormatString="{0:N2}"
                                                        ItemStyle-Wrap="false">
                                                        <ItemStyle Wrap="false" />
                                                    </asp:BoundField>
                                                    <asp:BoundField DataField="Amount"
                                                        HeaderText="Amount"
                                                        NullDisplayText="0" ItemStyle-HorizontalAlign="Right"
                                                        ReadOnly="True" DataFormatString="{0:N2}"
                                                        ItemStyle-Wrap="false">
                                                        <ItemStyle Wrap="false" />
                                                    </asp:BoundField>
                                                    <asp:BoundField DataField="DiscountAmount"
                                                        HeaderText="Discount"
                                                        NullDisplayText="0" ItemStyle-HorizontalAlign="Right"
                                                        ReadOnly="True" DataFormatString="{0:N2}"
                                                        ItemStyle-Wrap="false">
                                                        <ItemStyle Wrap="false" />
                                                    </asp:BoundField>
                                                    <asp:BoundField DataField="IssueSlipNo"
                                                        HeaderText="Isu.SlipNo"
                                                        NullDisplayText="0"
                                                        ReadOnly="True"
                                                        ItemStyle-Wrap="false">
                                                        <ItemStyle Wrap="false" />
                                                    </asp:BoundField>
                                                    <asp:BoundField DataField="RequestNo"
                                                        HeaderText="Req.No"
                                                        NullDisplayText="0"
                                                        ReadOnly="True"
                                                        ItemStyle-Wrap="false">
                                                        <ItemStyle Wrap="false" />
                                                    </asp:BoundField>
                                                    <asp:BoundField DataField="TechnicianName"
                                                        HeaderText="Technician"
                                                        NullDisplayText="0"
                                                        ReadOnly="True"
                                                        ItemStyle-Wrap="false">
                                                        <ItemStyle Wrap="false" />
                                                    </asp:BoundField>
                                                    <asp:BoundField DataField="ChargeToPrice"
                                                        HeaderText="C.T.Price"
                                                        NullDisplayText="0" ItemStyle-HorizontalAlign="Right"
                                                        ReadOnly="True" DataFormatString="{0:N2}"
                                                        ItemStyle-Wrap="false">
                                                        <ItemStyle Wrap="false" />
                                                    </asp:BoundField>
                                                    <asp:BoundField DataField="jobDetail"
                                                        HeaderText="jobCard"
                                                        NullDisplayText="0"
                                                        ReadOnly="True"
                                                        ItemStyle-Wrap="false">
                                                        <ItemStyle Wrap="false" />
                                                    </asp:BoundField>
                                                    <asp:BoundField DataField="OEMWarrantyPartFob"
                                                        HeaderText="PartFob"
                                                        NullDisplayText="0" ItemStyle-HorizontalAlign="Right"
                                                        ReadOnly="True" DataFormatString="{0:N2}"
                                                        ItemStyle-Wrap="false">
                                                        <ItemStyle Wrap="false" />
                                                    </asp:BoundField>
                                                    <asp:BoundField DataField="OEMWarrantyPartMarkUp"
                                                        HeaderText="PartMarkup"
                                                        NullDisplayText="0" ItemStyle-HorizontalAlign="Right"
                                                        ReadOnly="True" DataFormatString="{0:N2}"
                                                        ItemStyle-Wrap="false">
                                                        <ItemStyle Wrap="false" />
                                                    </asp:BoundField>
                                                    <asp:BoundField DataField="OEMWarrantyPartCostLC"
                                                        HeaderText="OemCostLC"
                                                        NullDisplayText="0" ItemStyle-HorizontalAlign="Right"
                                                        ReadOnly="True" DataFormatString="{0:N2}"
                                                        ItemStyle-Wrap="false">
                                                        <ItemStyle Wrap="false" />
                                                    </asp:BoundField>
                                                    <asp:BoundField DataField="DiscountPercent"
                                                        HeaderText="Discount%"
                                                        NullDisplayText="0" ItemStyle-HorizontalAlign="Right"
                                                        ReadOnly="True" DataFormatString="{0:N2}"
                                                        ItemStyle-Wrap="false">
                                                        <ItemStyle Wrap="false" />
                                                    </asp:BoundField>
                                                    <asp:BoundField DataField="BrandCode"
                                                        HeaderText="BrandCode"
                                                        NullDisplayText="0"
                                                        ReadOnly="True"
                                                        ItemStyle-Wrap="false">
                                                        <ItemStyle Wrap="false" />
                                                    </asp:BoundField>
                                                    <asp:BoundField DataField="ModelCode"
                                                        HeaderText="ModelCode"
                                                        NullDisplayText="0"
                                                        ReadOnly="True"
                                                        ItemStyle-Wrap="false">
                                                        <ItemStyle Wrap="false" />
                                                    </asp:BoundField>
                                                    <asp:BoundField DataField="FrtCostPerHourLC"
                                                        HeaderText="FrtCostLC"
                                                        NullDisplayText="0" ItemStyle-HorizontalAlign="Right"
                                                        ReadOnly="True" DataFormatString="{0:N2}"
                                                        ItemStyle-Wrap="false">
                                                        <ItemStyle Wrap="false" />
                                                    </asp:BoundField>
                                                    <asp:BoundField DataField="FrtRatePerHourFC"
                                                        HeaderText="FrtRateLC"
                                                        NullDisplayText="0" ItemStyle-HorizontalAlign="Right"
                                                        ReadOnly="True" DataFormatString="{0:N2}"
                                                        ItemStyle-Wrap="false">
                                                        <ItemStyle Wrap="false" />
                                                    </asp:BoundField>
                                                    <asp:BoundField DataField="FrtFactor"
                                                        HeaderText="FrtFactor"
                                                        NullDisplayText="0" ItemStyle-HorizontalAlign="Right"
                                                        ReadOnly="True" DataFormatString="{0:N2}"
                                                        ItemStyle-Wrap="false">
                                                        <ItemStyle Wrap="false" />
                                                    </asp:BoundField>

                                                    <asp:BoundField DataField="RowId"
                                                        HeaderText="RowId"
                                                        NullDisplayText="Null"
                                                        ReadOnly="True"
                                                        ItemStyle-Wrap="false">
                                                        <ItemStyle Wrap="false" />
                                                    </asp:BoundField>


                                                </Columns>
                                            </asp:GridView>
                                        </div>

                                    </div>
                                </div>
                            </div>
                            <div class="container p-0 g-0">
                                <div class="row p-0 g-0 bg-primary ">
                                    <div class="col col-12 h-50 bg-primary text-center fs-6 text-white border border-secondary">
                                        Item Details
                                    </div>
                                </div>
                                <div class="row p-0 g-0 bg_Entry_Color2">
                                    <div class="col col-1 p-1 text-start text-black border border-secondary">
                                        Code
                                    </div>
                                    <div class="col col-1 p-1 text-start text-black border border-secondary">
                                        <asp:TextBox ID="TxtShareItemCodePl" Text="" ReadOnly="true"
                                            CssClass="text-black w-100 text-uppercase text-start"
                                            runat="server"></asp:TextBox>
                                    </div>
                                    <div class="col col-1 p-1 text-start text-black border border-secondary">
                                        Item No
                                    </div>
                                    <div class="col col-2 p-1 text-start text-black border border-secondary">
                                        <asp:TextBox ID="TxtShareItemNoPl" Text="" ReadOnly="true"
                                            CssClass="text-black w-100 text-uppercase text-start"
                                            runat="server"></asp:TextBox>
                                    </div>
                                    <div class="col col-2 p-1 text-start text-black border border-secondary">
                                        Item Description
                                    </div>
                                    <div class="col col-5 p-1 text-start text-black border border-secondary">
                                        <asp:TextBox ID="TxtShareItemDescriptionPl" Text="" ReadOnly="true"
                                            CssClass="text-black w-100 text-uppercase text-start"
                                            runat="server"></asp:TextBox>
                                    </div>
                                </div>
                                <div class="row p-0 g-0 bg_Entry_Color2">
                                    <div class="col col-2 p-1 text-start text-black border border-secondary">
                                        Item Qty
                                    </div>
                                    <div class="col col-2 p-1 text-start text-black border border-secondary">
                                        <asp:TextBox ID="TxtShareItemQtyPl" Text="" ReadOnly="true"
                                            CssClass="text-black w-100 text-uppercase text-start"
                                            runat="server"></asp:TextBox>
                                    </div>
                                    <div class="col col-2 p-1 text-start text-black border border-secondary">
                                        Item Price
                                    </div>
                                    <div class="col col-2 p-1 text-start text-black border border-secondary">
                                        <asp:TextBox ID="TxtShareItemPricePl" Text="" ReadOnly="true"
                                            CssClass="text-black w-100 text-uppercase text-start"
                                            runat="server"></asp:TextBox>
                                    </div>
                                    <div class="col col-2 p-1 text-start text-black border border-secondary">
                                        Discount %
                                    </div>
                                    <div class="col col-2 p-1 text-start text-black border border-secondary">
                                        <asp:TextBox ID="TxtShareDiscountPerPl" Text="" ReadOnly="true"
                                            CssClass="text-black w-100 text-uppercase text-start"
                                            runat="server"></asp:TextBox>
                                    </div>
                                </div>
                                <div class="row p-0 g-0 bg_Entry_Color2">
                                    <div class="col col-2 p-1 text-start text-black border border-secondary">
                                        Discount Amount
                                    </div>
                                    <div class="col col-2 p-1 text-start text-black border border-secondary">
                                        <asp:TextBox ID="TxtShareDiscountAmountPl" Text="" ReadOnly="true"
                                            CssClass="text-black w-100 text-uppercase text-start"
                                            runat="server"></asp:TextBox>
                                    </div>
                                    <div class="col col-2 p-1 text-start text-black border border-secondary">
                                        Item Value
                                    </div>
                                    <div class="col col-2 p-1 text-start text-black border border-secondary">
                                        <asp:TextBox ID="TxtShareItemValuePl" Text="" ReadOnly="true"
                                            CssClass="text-black w-100 text-uppercase text-start"
                                            runat="server"></asp:TextBox>
                                    </div>
                                    <div class="col col-2 p-1 text-start text-black border border-secondary">
                                        Warranty
                                    </div>
                                    <div class="col col-2 p-1 text-start text-black border border-secondary">
                                        <asp:TextBox ID="TxtShareWarrantyStatusPl" Text="" ReadOnly="true"
                                            CssClass="text-black w-100 text-uppercase text-start"
                                            runat="server"></asp:TextBox>
                                    </div>
                                </div>
                            </div>
                            <div class="container p-0 g-0">
                                <div class="row p-0 g-0 bg-primary ">
                                    <div class="col col-12 p-1 h-50 bg-primary text-center fs-6 text-white border border-secondary">
                                        FOB Detail
                                    </div>
                                </div>
                                <div class="row p-0 g-0 bg_Entry_Color3">
                                    <div class="col col-2 p-1 text-start text-black border border-secondary">
                                        FOB
                                    </div>
                                    <div class="col col-2 p-1 text-start text-black border border-secondary">
                                        <asp:TextBox ID="TxtShareFobPl" Text="" ReadOnly="true"
                                            CssClass="text-black w-100 text-uppercase text-start"
                                            runat="server"></asp:TextBox>
                                    </div>
                                    <div class="col col-2 p-1 text-start text-black border border-secondary">
                                        Markup
                                    </div>
                                    <div class="col col-2 p-1 text-start text-black border border-secondary">
                                        <asp:TextBox ID="TxtShareMarkupPl" Text="" ReadOnly="true"
                                            CssClass="text-black w-100 text-uppercase text-start"
                                            runat="server"></asp:TextBox>
                                    </div>
                                    <div class="col col-2 p-1 text-start text-black border border-secondary">
                                        Total
                                    </div>
                                    <div class="col col-2 p-1 text-start text-black border border-secondary">
                                        <asp:TextBox ID="TxtShareTotalFobPl" Text="" ReadOnly="true"
                                            CssClass="text-black w-100 text-uppercase text-start"
                                            runat="server"></asp:TextBox>
                                    </div>
                                </div>
                            </div>
                            <div class="container p-0 g-0">
                                <div class="row p-0 g-0 bg-primary ">
                                    <div class="col col-12 h-50 bg-primary text-center fs-6 text-white border border-secondary">
                                        Share option
                                    </div>
                                </div>
                                <div class="row p-0 g-0 bg_Entry_Color4">
                                    <div class="col col-2 p-1 text-start text-black border border-secondary">
                                        Charge To
                                    </div>
                                    <div class="col col-4 p-1 text-start text-black border border-secondary">
                                        <asp:DropDownList ID="DdlChargeToShare" Height="35px"
                                            CssClass="form-select text-start w-100 bg-danger-subtle "
                                            AutoPostBack="true" ClientIDMode="Static" runat="server">
                                        </asp:DropDownList>
                                    </div>
                                </div>
                                <div class="row p-0 g-0 bg_Entry_Color4">
                                    <div class="col col-2 p-1 text-start text-black border border-secondary">
                                        Share %
                                    </div>
                                    <div class="col col-2 p-1 text-start text-black border border-secondary">
                                        <asp:TextBox ID="TxtSharePerPl" Text="" ReadOnly="true"
                                            CssClass="text-black w-100 text-uppercase text-start"
                                            runat="server"></asp:TextBox>
                                    </div>
                                    <div class="col col-2 p-1 text-start text-black border border-secondary">
                                        Share Price
                                    </div>
                                    <div class="col col-2 p-1 text-start text-black border border-secondary">
                                        <asp:TextBox ID="TxtSharePricePl" Text="" ReadOnly="true"
                                            CssClass="text-black w-100 text-uppercase text-start"
                                            runat="server"></asp:TextBox>
                                    </div>
                                    <div class="col col-2 p-1 text-start text-black border border-secondary">
                                        Unit Price
                                    </div>
                                    <div class="col col-2 p-1 text-start text-black border border-secondary">
                                        <asp:TextBox ID="TxtShareUnitPrice" Text="" ReadOnly="true"
                                            CssClass="text-black w-100 text-uppercase text-start"
                                            runat="server"></asp:TextBox>
                                    </div>

                                </div>
                                <div class="row p-0 g-0 bg_Entry_Color4">
                                    <div class="col col-2 p-1 text-start text-black border border-secondary">
                                        Share Amount
                                    </div>
                                    <div class="col col-2 p-1 text-start text-black border border-secondary">
                                        <asp:TextBox ID="TxtShareAmountPl" Text="" ReadOnly="true"
                                            CssClass="text-black w-100 text-uppercase text-start"
                                            runat="server"></asp:TextBox>
                                    </div>
                                    <div class="col col-2 p-1 text-start text-black border border-secondary">
                                        Discount
                                    </div>
                                    <div class="col col-2 p-1 text-start text-black border border-secondary">
                                        <asp:TextBox ID="TxtShareDiscountPl" Text="" ReadOnly="true"
                                            CssClass="text-black w-100 text-uppercase text-start"
                                            runat="server"></asp:TextBox>
                                    </div>
                                    <div class="col col-2 p-1 text-start text-black border border-secondary">
                                        ShareValue
                                    </div>
                                    <div class="col col-2 p-1 text-start text-black border border-secondary">
                                        <asp:TextBox ID="TxtShareValuePl" Text="" ReadOnly="true"
                                            CssClass="text-black w-100 text-uppercase text-start"
                                            runat="server"></asp:TextBox>
                                    </div>
                                </div>
                            </div>
                            <div class="container p-0 g-0">
                                <div class=" row p-0 g-0">
                                    <div class="col col-12">
                                        <asp:Button ID="BtnCloseModalPopupShareValue" runat="server"
                                            CssClass=" btn btn-danger" Height="32px"
                                            Text="Close" />

                                    </div>
                                </div>
                            </div>



                        </ContentTemplate>
                    </asp:UpdatePanel>
                </div>
            </asp:Panel>
            <%-- End Panel Popup --%>
        </div>
    </div>
</div>
<%-- End Popup Module For Share --%>

protected void GvShareListPl_RowCommand(object sender, GridViewCommandEventArgs e)
{
    if (e.CommandName == "btnSelectItemPl")
    {
        int index = Int32.Parse(e.CommandArgument.ToString());
        GridViewRow row = GvShareListPl.Rows[index];
        TxtShareItemCodePl.Text = row.Cells[3].Text;
    }
}