I have been pulling my hair on this for 2 days without success.
As you can read in the subject, I am simply trying to stop the web page from scrolling to the top of the page when a user clicks a link in my GridView. But the GridView is within a ContentPlaceHolder which is set at a master page.
I have looked at all the possible solutions via Google, even a new assembly idead to build jscript code at run time but all have failed.
Here is my master page:
<%@ Master Language="C#" AutoEventWireup="true" CodeFile="Attendance.master.cs" Inherits="Attendance_Attendance" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>Attendance</title>
<style type="text/css">
.timetablecell {
cursor: pointer;
}
.timetablecell:hover {
background-color: Orange;
}
.smalltext {
font-size: 8pt;
}
.classsize {
font-size: 8pt; display: block;
}
.nowrap {
white-space: nowrap;
}
img {
border: 0;
}
</style>
<asp:ContentPlaceHolder ID="ContentPlaceHolderHead" runat="server">
</asp:ContentPlaceHolder>
</head>
<body>
<form id="form1" runat="server">
<asp:ScriptManager ID="SMan" runat="server" EnablePageMethods="True">
</asp:ScriptManager>
<asp:Panel ID="HeaderPanel" runat="server">
<table width="100%">
<tr valign="middle">
<td style="width: 25%; " valign="middle" align="left" >
<img src="../images/blahblah.jpg" alt="Tec-NQ" />
</td>
<td valign="middle" align="center" style="width: 50%">
<asp:Image ID="Image3" runat="server" ImageUrl="~/images/blahblah2.jpg" /><br />
<asp:Label ID="Label1" runat="server" Font-Bold="True" Font-Names="Times New Roman"
Font-Size="1.2em">BLAHBLAHBLAH</asp:Label>
</td>
<td style="width:25%" align="right">
<img src="../images/BLAHBLAH3.jpg" alt="BLAHBLAH" />
</td>
</tr>
</table>
</asp:Panel>
<table width="100%">
<tr>
<td valign="top" style="width:15%">
<asp:Panel ID="MenuPanel" runat="server">
<table>
<tr>
<td>
<h5 style="white-space:nowrap;">Attendance Menu</h5>
</td>
</tr>
<tr>
<td>
<asp:Menu ID="Attendance" ItemWrap="true" Font-Size="10pt" StaticMenuStyle-VerticalPadding="4"
runat="server" StaticMenuItemStyle-VerticalPadding="1">
<Items>
<asp:MenuItem NavigateUrl="~/Attendance/ClassAttendance.aspx" Text="Class Attendance"
Value="Class Attendance"></asp:MenuItem>
<asp:MenuItem NavigateUrl="~/Attendance/Classes.aspx" Text="Classes"
Value="Classes"></asp:MenuItem>
<asp:MenuItem NavigateUrl="~/Attendance/Timetable.aspx" Text="Timetable"
Value="Timetable"></asp:MenuItem>
<asp:MenuItem NavigateUrl="~/Attendance/Roster.aspx" Text="Roster"
Value="Roster"></asp:MenuItem>
<asp:MenuItem NavigateUrl="~/Attendance/ApprovedAbsences.aspx" Text="Approved Absences"
Value="Approved Absences"></asp:MenuItem>
<asp:MenuItem NavigateUrl="~/Default.aspx" Text="Main Menu" Value="Main Menu"></asp:MenuItem>
</Items>
<StaticMenuStyle VerticalPadding="4px" />
</asp:Menu>
<asp:Menu ID="AttendanceReports" ItemWrap="true" Font-Size="10pt" StaticMenuStyle-VerticalPadding="4"
runat="server" StaticMenuItemStyle-VerticalPadding="1">
<Items>
<asp:MenuItem Text="<h5 style='margin-top:10px;margin-bottom:10px'>Reports</h5>" Selectable="false"></asp:MenuItem>
<asp:MenuItem NavigateUrl="~/Attendance/ClassRoles.aspx" Text="Class Logins"
Value="Class Logins"></asp:MenuItem>
<asp:MenuItem NavigateUrl="~/Attendance/StudentsHereToday.aspx" Text="Students Here Today"
Value="Students Here Today"></asp:MenuItem>
<asp:MenuItem NavigateUrl="~/Attendance/StudentAbsences.aspx" Text="Student Absences"
Value="Student Absences"></asp:MenuItem>
<asp:MenuItem NavigateUrl="~/Attendance/StudentKPI.aspx" Text="Student KPI"
Value="Student KPI"></asp:MenuItem>
<asp:MenuItem NavigateUrl="~/Attendance/AttendanceDetailed.aspx" Text="Attendance Detailed"
Value="Attendance Detailed"></asp:MenuItem>
<asp:MenuItem NavigateUrl="~/Attendance/StudentAttendance.aspx" Text="Attendance Summary"
Value="Attendance Summary"></asp:MenuItem>
<asp:MenuItem NavigateUrl="~/Attendance/AttendanceNotMarked.aspx" Text="Attendance Not Marked"
Value="Attendance Not Marked"></asp:MenuItem>
<asp:MenuItem NavigateUrl="~/Attendance/AttendanceFullTime.aspx" Text="Attendance Full Time"
Value="Attendance Full Time"></asp:MenuItem>
<asp:MenuItem NavigateUrl="~/rptsAttendance/default.aspx" Text="Old Attendance Reports"
Value="Old Attendance Reports"></asp:MenuItem>
<asp:MenuItem NavigateUrl="~/Attendance/StaffTimetable.aspx" Text="Staff Timetable"
Value="Staff Timetable"></asp:MenuItem>
</Items>
<StaticMenuStyle VerticalPadding="4px" />
</asp:Menu>
</td>
</tr>
<tr>
<td>
<asp:ImageButton ID="HelpImageButton" runat="server" ImageUrl="/images/helpsm.jpg" AlternateText="HELP" CausesValidation="false" OnClick="Help_Click" />
<!--a href="/Help/Attendance/ClassAttendance.aspx" target="_blank"><img src="/images/helpsm.jpg" alt="HELP" border="0"/></a-->
</td>
</tr>
</table>
</asp:Panel>
</td>
<td valign="top">
<asp:ContentPlaceHolder ID="ContentPlaceHolder1" runat="server">
</asp:ContentPlaceHolder>
</td>
</tr>
</table>
</form>
</body>
</html>
And here is one of the above pages with my GridView ...
<%@ Page Language="C#" MasterPageFile="~/Attendance/Attendance.master"
AutoEventWireup="true" CodeFile="ClassAttendance.aspx.cs"
Inherits="Attendance_ClassAttendance"
Title="Class Attendance" Culture="en-AU"%>
<asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">
...
...
...
<asp:GridView ID="gvStudents" runat="server" AutoGenerateColumns="false" AllowSorting="true" CellPadding="2" ShowFooter="true" DataKeyNames="AttendanceID"
OnRowDataBound="GridView_RowDataBound" OnDataBound="GridView_DataBound" EnableSortingAndPagingCallbacks="False">
...
...
</asp:GridView>
</asp:Content>
...
...
I've tried several solutions, as mentioned above ...
How to persist scroll position using Master Page? ASP page scrolls to top on UpdatePanel update http://www.dotnetspark.com/links/41291-how-to-prevent-master-page-postback-when.aspx https://web.archive.org/web/20211020140248/https://www.4guysfromrolla.com/articles/111704-1.aspx
The last link looked the most promising, but I think it was written for non-Master page websites that have a simple form.
I also tried the usual solutions to place the SmartNavigation tag and ...
Page.MaintainScrollPositionOnPostBack = true;
None of the above worked.
I suspect it's because I am using a ContentPlaceHolder? Maybe I should place a <div></div> around it? I tried that, but also not working.
Thanks for your support.
Cheers
Remove the href="#" and trick the ASP.net page with fancy CSS to look like a blue link with the mouse changing as well. It works.