Solved

HistoryPoint doesn't work after hyperlink clicked and come back with ListView sorted

Posted on 2008-09-29
1
516 Views
Last Modified: 2013-11-08
Hi, I have a ListView putted inside UpdatePanel which can be sorted and paged. HistoryPoint works only in the page itself, but once I clicked the link in the row of the ListView to go to a different page and come back, the last history point is not the point I left. I inserted the code AddHistoryPoint to LinkButton_dClicke event method so that once the link was clicked, the history point is created with the page number and sorted column name and sort method(ascending or desending). But when I come back to the ListView from the detail page, it doesn't show  the list that I left. Here are the codes;


private void AddHisotryPointAmount(string sortExpression, SortDirection sortDirection)
    {
        if (ScriptManager1.IsInAsyncPostBack && !ScriptManager1.IsNavigating)
        {
            string v = string.Empty;
            if (sortDirection == SortDirection.Ascending)
                v = "ASC:" + sortExpression;
            else
                v = "DES:" + sortExpression;
 
            v += "PAGENUM:" + DataPager1.StartRowIndex;
            ScriptManager1.AddHistoryPoint("A", v);
        }
    }
 
 
    protected void ScriptManager1_Navigate(object sender, HistoryEventArgs e)
    {
        int cState = e.State.Keys.Count;
        if (cState < 1)
        {
            //the list is in initial state. never sorted or paged. 
        }
        else
        {
           // string lastStateKey = e.State.Keys[cState-1];
            //string lastStateValue = e.State[lastStateKey];
            string lastStateKey = e.State.Keys[0];
            string lastStateValue = e.State[0];
 
            if (lastStateKey == "P")
            {
                int pageNum = Int32.Parse(lastStateValue);
                DataPager1.SetPageProperties(pageNum, DataPager1.PageSize, true);
            }
            else if (lastStateKey == "S")
            {
                string sortExpression = string.Empty;
                if (lastStateValue.IndexOf("ASC:") > -1)
                {
                    sortExpression = lastStateValue.Substring(lastStateValue.IndexOf("ASC:") + 4);
                    ListView1.Sort(sortExpression, SortDirection.Ascending);
                }
                else if (lastStateValue.IndexOf("DES:") > -1)
                {
                    sortExpression = lastStateValue.Substring(lastStateValue.IndexOf("DES:") + 4);
                    ListView1.Sort(sortExpression, SortDirection.Descending);
                }
            }
            else if (lastStateKey == "A")
            {
                string sortExpression = string.Empty;
                if (lastStateValue.IndexOf("ASC:") > -1)
                {
                    sortExpression = lastStateValue.Substring(lastStateValue.IndexOf("ASC:") + 4, lastStateValue.IndexOf("PAGENUM:")-(lastStateValue.IndexOf("ASC:") + 4));
                    ListView1.Sort(sortExpression, SortDirection.Ascending);
                }
                else if (lastStateValue.IndexOf("DES:") > -1)
                {
                    sortExpression = lastStateValue.Substring(lastStateValue.IndexOf("DES:") + 4, lastStateValue.IndexOf("PAGENUM:") - (lastStateValue.IndexOf("DES:") + 4));
                    ListView1.Sort(sortExpression, SortDirection.Descending);
                }
                int pageNum = Int32.Parse(lastStateValue.Substring(lastStateValue.IndexOf("PAGENUM:")+8));
                DataPager1.SetPageProperties(pageNum, DataPager1.PageSize, true);
            }
            else { }
            
        }
        
    }
 
 
 
protected void ListView1_ItemCommand(object sender, ListViewCommandEventArgs e)
    {
        try
        {
            LinkButton lnkTotalCondidate = (LinkButton)e.CommandSource;
            LinkButton lnkTotal = (LinkButton)e.Item.FindControl("lnkTotal");
 
            if (lnkTotalCondidate.ID == lnkTotal.ID)
            {
                AddHisotryPointAmount(ListView1.SortExpression,ListView1.SortDirection);
                Response.Redirect("SingleReceipt.aspx?ResNo=" + lnkTotal.Attributes["ResNo"]);
            }
        }
        catch (Exception ex)
        {
            ;
        }
        
    }

Open in new window

0
Comment
Question by:crcsupport
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
1 Comment
 
LVL 1

Accepted Solution

by:
crcsupport earned 0 total points
ID: 22602946
I solved the problem. I had to insert historypoint for both paging and sorting everytime no matter what action(paging, sorting, leaving the page to another page).  I like AJAX how they work with no flash, but sometimes it's very headache to find bug when coding.
0

Featured Post

Independent Software Vendors: We Want Your Opinion

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

This article describes relatively difficult and non-obvious issues that are likely to arise when creating COM class in Visual Studio and deploying it by professional MSI-authoring tools. It is assumed that the reader is already familiar with the cla…
This article discusses how to implement server side field validation and display customized error messages to the client.
In this video, viewers will be given step by step instructions on adjusting mouse, pointer and cursor visibility in Microsoft Windows 10. The video seeks to educate those who are struggling with the new Windows 10 Graphical User Interface. Change Cu…
This is my first video review of Microsoft Bookings, I will be doing a part two with a bit more information, but wanted to get this out to you folks.

626 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