Solved

GridView - Remember position of horizontal scrollbar on postback

Posted on 2008-11-01
5
1,960 Views
Last Modified: 2013-11-19
Hi
I have a gridview that is dynamically filled in - so don't know how many columns in design view.  
The columns need to be variable width - this is done in the Row_Created

   Dim td As TableCell
   For x = 1 To e.Row.Cells.Count - 1
     td = e.Row.Cells(x)
     td.Width = 70
   Next


I came to this after help on EE.


The horizontal scroll is displayed and user can navigate to right on gridview - gridview can't all be fitted on screen, maybe up to XXX columns.
The gridview column titles have link.  On clicking the link, there is a postback and values at top of screen are updated according to the column selected detailing all outputs in more user friendly way than a table.

The problem...
On postback, the horizontal position of scrollbar is forgotten. So the user could have scrolled well to the right off gridview to column 50 say, then on postback the horizontal scrollbar returns to left (column 1), and if the wanted detailed on column 51 they have to scroll all the way to right again.

So I want to maintain horizontal position of scrollbar if possible so user doesn't have to scroll all way to right again.
Had problems with AJAX on this page so don't want that route.

Thanks in advance
<asp:Panel ID="TablePanel" runat="server" Width="800px" Style="overflow: scroll;

     border: gray thin solid; border-width: 1px;" BorderColor="#FF6600">

     <div id="gridViewDiv" style="width: 5000px; background-color: Silver;">

         <asp:GridView ID="GridView1" runat="server" BackColor="white" GridLines="both" BorderStyle="Solid">

         </asp:GridView>

     </div>

</asp:Panel>

Open in new window

0
Comment
Question by:rwallacej
  • 3
  • 2
5 Comments
 
LVL 16

Accepted Solution

by:
Gyanendra Singh earned 500 total points
ID: 22856264
refer this link .. it will resolve your problem
http://forums.devx.com/showthread.php?t=154117
0
 

Author Comment

by:rwallacej
ID: 22856306
hi,
thanks for feedback.

I've taken the markup as Javascript from bottom of article (which seemed to be the solution), see below, but still don't retain positon.
I have put alert in the javascript to check it is called and it is.

can you advise further, please?
                <blockquote>

                    <div id="grdWithScroll" style="overflow:auto; width: 400px; background-color: Silver;" onscroll="SetDivPosition()">

                        <asp:GridView ID="GridView1" runat="server" BackColor="white" GridLines="both" BorderStyle="Solid">

                        </asp:GridView>

                    </div>

                </blockquote>
 
 
 

   <script type="text/javascript">

      window.onload = function(){

        var strCook = document.cookie;

        if(strCook.indexOf("!~")!=0){

          var intS = strCook.indexOf("!~");

          var intE = strCook.indexOf("~!");

          var strPos = strCook.substring(intS+2,intE);

          document.getElementById("grdWithScroll").scrollTop = strPos;

        }

      }

      

      function SetDivPosition(){

        var intY = document.getElementById("grdWithScroll").scrollTop;

        document.title = intY;

        document.cookie = "yPos=!~" + intY + "~!";

      }

    </script>

Open in new window

0
 

Author Comment

by:rwallacej
ID: 22856340
I should have put the code when it was changed to the position LEFT (I'm not bothered about vertical position). Here it is, but doesn't work
       window.onload = function(){

        var strCook = document.cookie;

        if(strCook.indexOf("!~")!=0){

            var intS = strCook.indexOf("!~");

            var intE = strCook.indexOf("~!");

            var strPos = strCook.substring(intS+2,intE);

            document.getElementById("grdWithScroll").scrollLeft = strPos;

        }

      }

      

      function SetDivPosition(){

        var intX = document.getElementById("grdWithScroll").scrollLeft;

        document.title = intX;

        document.cookie = "xPos=!~" + intX + "~!";

      }

Open in new window

0
 

Author Closing Comment

by:rwallacej
ID: 31512295
go it thanks.....needed to be the reference on my TablePanel not the DIV contained therein.
thank-you very much,
rwallacej
0
 
LVL 16

Expert Comment

by:Gyanendra Singh
ID: 22856978
your welcome
0

Featured Post

Enabling OSINT in Activity Based Intelligence

Activity based intelligence (ABI) requires access to all available sources of data. Recorded Future allows analysts to observe structured data on the open, deep, and dark web.

Join & Write a Comment

Shoutout to Emily Plummer (http://www.experts-exchange.com/members/eplummer26.html) for giving me this article! She did most of it, I just finished it up and posted it for her :)    Introduction In a previous article (http://www.experts-exchang…
I found this questions asking how to do this in many different forums, so I will describe here how to implement a solution using PHP and AJAX. The logical flow for the problem should be: Write an event handler for the first drop down box to get …
Viewers will learn one way to get user input in Java. Introduce the Scanner object: Declare the variable that stores the user input: An example prompting the user for input: Methods you need to invoke in order to properly get  user input:
The viewer will learn how to dynamically set the form action using jQuery.

758 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question

Need Help in Real-Time?

Connect with top rated Experts

23 Experts available now in Live!

Get 1:1 Help Now