Using PivotViewer 2 and changing CxmlCollectionSource with cxml files.

Question

Hi,

I'm trying to convert a project from  sl4/pv1 to sl5/pv2 and used to change the cxml file on a button click. The new version loads the cxml but doesn't always display images. If I click on a filter the images display properly . The first display always works.

TIA

John

using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;
using System.Windows.Controls.Pivot;

namespace PivotSample
{
    public partial class ArtGallery : UserControl
    {
        //private string CXML_PATH;
        string CXML_PATH;
        CxmlCollectionSource _cxml;

        public ArtGallery(int collectiontype)
        {
            InitializeComponent();
            Viewer.Loaded += new RoutedEventHandler(pvViewer_Loaded);
             
            if (collectiontype == 1)
            {
             
                CXML_PATH = "http://www.gtz.com/Pivots/MRG/mrgCollection0.cxml";
            }
            else
                if (collectiontype == 101)
                {
                    CXML_PATH = "http://www.gtz.com/Pivots/Nina/NinaCollection1/NinaCollection1.cxml";
    
                }
                else
                    if (collectiontype == 201)
                        CXML_PATH = "http://www.gtz.com/Pivots/MRGTest/Kiosk1.cxml";
                    }
                  
        }

        void pvViewer_Loaded(object sender, RoutedEventArgs e)
                
            _cxml = new CxmlCollectionSource(new Uri(CXML_PATH, UriKind.Absolute));
            _cxml.StateChanged +=  new EventHandler<CxmlCollectionStateChangedEventArgs>(_cxml_StateChanged);
        }

        void _cxml_StateChanged(object sender, CxmlCollectionStateChangedEventArgs e)
        {

            if (e.NewState == CxmlCollectionState.Loaded)
            {
               Viewer.PivotProperties = _cxml.ItemProperties.ToList();
                Viewer.ItemTemplates = _cxml.ItemTemplates;
                Viewer.ItemsSource = _cxml.Items;
              
            } 
        }

        // from old pivotviewer
        //    OpenLink(args.Link.ToString());
        //}

        /// <summary>
        /// Handle double-clicks on collection items
        /// </summary>


        /// <summary>
        /// Open a URI to either a collection or a web page
        /// </summary>

        //Mar 2012
        //  not needed 
        //private void OpenLink(string linkUri)
        //{
        //    if (linkUri.Contains(".cxml"))
        //    {
        //        // Link points to a collection file, open it in place
        //        //    LoadCollection(linkUri);
        //    }
        //    else
        //    {
        //        // Link points to a normal web page. Open it in a new tab.
        //        HtmlPage.Window.Navigate(new Uri(linkUri, UriKind.RelativeOrAbsolute), "PivotViewerSampleTargetFrame");
        //    }
        //}

        /// <summary>
        /// Helper to load a collection from a Uri that may contain a viewerState fragment
        /// </summary>
        //  private void LoadCollection(string collectionUri)
        //  {
        //      string baseCollectionUri;
        //      string viewerState;
        //      BreakupCollectionUri(collectionUri, out baseCollectionUri, out viewerState);
        //      PivotViewer.LoadCollection(baseCollectionUri, viewerState);
        //  }
        //private void BreakupCollectionUri(string collectionUri, out string baseCollectionUri, out string viewerState)
        //{
        //    string linkUriString = collectionUri;
        //    string[] linkParts = linkUriString.Split(new char[] { '#' });
        //    baseCollectionUri = linkParts[0];
        //    viewerState = (linkParts.Length > 1) ? linkParts[1] : string.Empty;
        //}

     
        //
    }
}

Answer 1

Hi johntom,

What browser are you using? Please try in other browsers for test. Is there any error message?

http://stackoverflow.com/questions/8766669/silverlight-5-pivotviewer-control-not-showing-image-tiles-from-cxml

You may take a look at below blog post for more information:

http://www.wintellect.com/CS/blogs/sloscialo/archive/2011/10/17/working-with-pivotviewer-and-the-cxmlcollectionsource.aspx

Best Regards,

Answer 2

Hi

I get the intermittent problems on IE 9.0.8x, Chrome 17.0.x, Firefox 10.0.2. I've tried to passalong a value to the cxml as per Tony Champion but nothing completely fixes the problem. I have 4 buttons on the page each loading a different cxml file.

CXML_PATH = "http://www.gtz.com/Pivots/MRGTest/Kiosk1.cxml?reload=" + cnt.ToString();

Thanks,

John