Dear SirUpdate panel is not working every time if I select SELECTrdquo button page is moving at topIf I remove trigger SELECT event is not firedltdiv class34DivDueInsList34gt ltaspPanel ID34PnlDueInsList34 runat34server34gt lttable class34TableDueIns34gt lttrgt lttdgt ltaspUpdatePanel ID34UpdatePanel534 UpdateMode34Conditional34 runat34server34gt

Hi arvindaspYou need to set the MaintainScrollPositionOnPostback to true at page levelClt Page Language34C34 AutoEventWireup34true34 CodeFile34Defaultaspxcs34 Inherits34Defalt34 MaintainScrollPositionOnPostback34true34 gtVBNetlt Page Language34VB34 AutoEventWireup34false34 CodeFile34Defaultaspxvb34 Inherits34Default34 MaintainScrollPositionOnPostback34true34 gtSampleHTMLltdiv class34DivDueInsList34gt ltaspScriptManager ID34spm134 runat34server34gt ltaspScriptManagergt ltaspPanel ID34PnlDueInsList34 runat34server34gt ltbr gt ltbr gt ltbr gtltbr gtltbr gtltbr gtltbr gt ltbr gt ltbr gt ltbr gtltbr gtltbr gtltbr gtltbr gt ltbr gt ltbr gt ltbr gtltbr gtltbr gtltbr gtltbr gt lttable class34TableDueIn

Maintain Scroll Position on ASP.Net UpdatePanel Postback

arvindas...

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User: arvindasp
Posted: on Apr 23, 2023 11:15 PM
Forum: ASP.Net AJAX
Answer: 1
Views: 3220

Dear Sir

Update panel is not working every time if I select "SELECT” button page is moving at top.

If I remove trigger "SELECT" event is not fired.

<div class="DivDueInsList">
    <asp:Panel ID="PnlDueInsList" runat="server">

        <table class="TableDueIns">
            <tr>
                <td>
                    <asp:UpdatePanel ID="UpdatePanel5" UpdateMode="Conditional" runat="server">
                        <ContentTemplate>
                            <asp:GridView ID="GVInsDueList" runat="server"
                                CssClass="mydatagridstafflist"
                                PagerStyle-CssClass="pager"
                                RowStyle-CssClass="rows" AllowPaging="True"
                                OnPageIndexChanging="GVInsDueList_PageIndexChanging"
                                PageSize="3"
                                OnSelectedIndexChanged="GVInsDueList_SelectedIndexChanged"
                                OnRowCommand="GVInsDueList_RowCommand"
                                EmptyDataText="No Insurance Policy History Found"
                                EmptyDataRowStyle-ForeColor="Red"
                                EmptyDataRowStyle-Font-Bold="true"
                                AutoGenerateColumns="False">
                                <EmptyDataRowStyle Font-Bold="True" ForeColor="Red" />
                                <PagerSettings FirstPageText="First" LastPageText="Last"
                                    Mode="NextPreviousFirstLast"
                                    NextPageText="Next" PageButtonCount="3" PreviousPageText="Previous" />
                                <PagerStyle CssClass="pager"></PagerStyle>
                                <RowStyle CssClass="rows"></RowStyle>
                                <Columns>


                                    <asp:TemplateField ItemStyle-HorizontalAlign="Center" HeaderText="Select">
                                        <ItemTemplate>
                                            <asp:Button ID="btnSelectIns" CssClass="Btn" runat="server"
                                                Text="Select"
                                                CommandArgument="<%#((GridViewRow)Container).RowIndex%>"
                                                CommandName="InsEntry" />
                                        </ItemTemplate>
                                    </asp:TemplateField>

                                    <asp:BoundField HeaderText="Policy No" DataField="PolicyNo" />
                                    <asp:BoundField HeaderText="Effective Date" DataField="PurchaseDate" DataFormatString="{0:dd/MM/yyyy}" />
                                    <asp:BoundField HeaderText="Expiry Date" DataField="PolicyExpDate" DataFormatString="{0:dd/MM/yyyy}" />
                                    <asp:BoundField HeaderText="Premium Amount" DataField="PremiumAmount"
                                        ItemStyle-HorizontalAlign="Right" ItemStyle-BackColor="LightYellow"
                                        DataFormatString="{0:N2}" />
                                    <asp:BoundField HeaderText="Sum of Amount" DataField="SumofAmount"
                                        ItemStyle-HorizontalAlign="Right" ItemStyle-BackColor="#ff9900"
                                        DataFormatString="{0:N2}" />
                                    <asp:BoundField HeaderText="Ins.Company Name" DataField="InsCompanyName" />
                                    <asp:BoundField HeaderText="Renew Status" DataField="RenewStatus" />
                                    <asp:BoundField HeaderText="Id No" DataField="TmpRowId" />
                                    <asp:TemplateField ItemStyle-HorizontalAlign="Center" HeaderText="View Policy">
                                        <ItemTemplate>
                                            <asp:LinkButton ID="lnkViewPolicy" runat="server"
                                                Text="View Policy" OnClick="ViewPolicy"
                                                CommandArgument='<%# Eval("TmpRowId") %>'>
                                            </asp:LinkButton>
                                        </ItemTemplate>
                                    </asp:TemplateField>
                                </Columns>
                            </asp:GridView>
                        </ContentTemplate>
                        <Triggers>
                            <asp:PostBackTrigger ControlID="GVInsDueList" />
                        </Triggers>
                    </asp:UpdatePanel>
                </td>
            </tr>
        </table>
    </asp:Panel>
</div>

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Jeff

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ANSWER
User: Jeff
Replied: on Apr 24, 2023 01:57 AM
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Hi arvindasp,

You need to set the MaintainScrollPositionOnPostback to true at page level.

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="Defalt" MaintainScrollPositionOnPostback="true" %>

VB.Net

<%@ Page Language="VB" AutoEventWireup="false" CodeFile="Default.aspx.vb" Inherits="_Default" MaintainScrollPositionOnPostback="true" %>

Sample

HTML

<div class="DivDueInsList">
    <asp:ScriptManager ID="spm1" runat="server">
    </asp:ScriptManager>
    <asp:Panel ID="PnlDueInsList" runat="server">
        <br /> <br /> <br /><br /><br /><br /><br />
        <br /> <br /> <br /><br /><br /><br /><br />
        <br /> <br /> <br /><br /><br /><br /><br />
        <table class="TableDueIns">
            <tr>
                <td>
                    <asp:UpdatePanel ID="UpdatePanel5" UpdateMode="Conditional" runat="server">
                        <ContentTemplate>
                            <asp:GridView ID="gvCustomers" runat="server" CssClass="mydatagridstafflist" PagerStyle-CssClass="pager"
                                RowStyle-CssClass="rows" AllowPaging="True" OnPageIndexChanging="OnPageIndexChanging"
                                PageSize="3" OnSelectedIndexChanged="OnSelectedIndexChanged" OnRowCommand="OnRowCommand"
                                EmptyDataText="No Insurance Policy History Found" EmptyDataRowStyle-ForeColor="Red"
                                EmptyDataRowStyle-Font-Bold="true" AutoGenerateColumns="False">
                                <EmptyDataRowStyle Font-Bold="True" ForeColor="Red" />
                                <PagerSettings FirstPageText="First" LastPageText="Last" Mode="NextPreviousFirstLast"
                                    NextPageText="Next" PageButtonCount="3" PreviousPageText="Previous" />
                                <PagerStyle CssClass="pager"></PagerStyle>
                                <RowStyle CssClass="rows"></RowStyle>
                                <Columns>
                                    <asp:TemplateField ItemStyle-HorizontalAlign="Center" HeaderText="Select">
                                        <ItemTemplate>
                                            <asp:Button ID="btnSelectIns" CssClass="Btn" runat="server" Text="Select" CommandArgument="<%#((GridViewRow)Container).RowIndex%>"
                                                CommandName="InsEntry" />
                                        </ItemTemplate>
                                    </asp:TemplateField>
                                    <asp:BoundField HeaderText="Policy No" DataField="PolicyNo" />
                                    <asp:BoundField HeaderText="Expiry Date" DataField="PolicyExpDate" DataFormatString="{0:dd/MM/yyyy}" />
                                    <asp:BoundField HeaderText="Premium Amount" DataField="PremiumAmount" />
                                    <asp:TemplateField>
                                        <ItemTemplate>
                                            <asp:LinkButton ID="lnkViewPolicy" runat="server" Text="View Policy" OnClick="ViewPolicy">
                                            </asp:LinkButton>
                                        </ItemTemplate>
                                    </asp:TemplateField>
                                </Columns>
                            </asp:GridView>
                        </ContentTemplate>
                        <Triggers>
                            <asp:PostBackTrigger ControlID="gvCustomers" />
                        </Triggers>
                    </asp:UpdatePanel>
                </td>
            </tr>
        </table>
    </asp:Panel>
</div>

Screenshot

I agree, here is the link: https://www.e-iceblue.com/Introduce/spire-office-for-net-free.html

Maintain Scroll Position on ASP.Net UpdatePanel Postback

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