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
Solved

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

Posted on 2008-09-29
1
510 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
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

Master Your Team's Linux and Cloud Stack

Come see why top tech companies like Mailchimp and Media Temple use Linux Academy to build their employee training programs.

Question has a verified solution.

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

Suggested Solutions

Introduction Got endorsements from your clients?  Great!  There is almost nothing better than word-of-mouth advertising.  But how can you do that on the internet?  Sure you can make a page for endorsement quotations and list them all, but who is …
Real-time is more about the business, not the technology. In day-to-day life, to make real-time decisions like buying or investing, business needs the latest information(e.g. Gold Rate/Stock Rate). Unlike traditional days, you need not wait for a fe…
This video shows how to quickly and easily add an email signature for all users on Exchange 2016. The resulting signature is applied on a server level by Exchange Online. The email signature template has been downloaded from: www.mail-signatures…

828 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