Moving Pivotviewer Collections from Silverlight 4 to Silverlight 5
-
27-05-2021 - |
문제
I'm just playing around with PivotViewer control in Silverlight 5. It seems like many things got improved, but I'm having some issues displaying my old .cxml
collections that perfectly worked under Silverlight 4
The old way to code:
InitializeComponent();
MainPivotViewer.LoadCollection("http://localhost:4573/ClientBin/Actresses.cxml", string.Empty);
translates now to something like:
InitializeComponent();
CxmlCollectionSource _cxml = new CxmlCollectionSource(new Uri("http://localhost:1541/ClientBin/Actresses.cxml", UriKind.Absolute));
PivotMainPage.PivotProperties = _cxml.ItemProperties.ToList();
PivotMainPage.ItemTemplates = _cxml.ItemTemplates;
PivotMainPage.ItemsSource = _cxml.Items;
What happens is that Items are shown, but nothing shows up in the filter pane and, if an item is selected, there is no longer any description for them!
해결책
What is happening is that _cxml.ItemsProperties
is not loaded until after the CxmlCollectionSource
downloads and processes the .cxml
file. CxmlCollectionSource
has a StateChanged
event. If you check to see if the State
is Loaded
, then you can map the _cxml
properties to the PivotViewer.
Here is a sample of what this would look like:
private CxmlCollectionSource _cxml;
void pViewer_Loaded(object sender, RoutedEventArgs e)
{
_cxml = new CxmlCollectionSource(new Uri("http://myurl.com/test.cxml",
UriKind.Absolute));
_cxml.StateChanged += _cxml_StateChanged;
}
void _cxml_StateChanged(object sender,
CxmlCollectionStateChangedEventArgs e)
{
if(e.NewState == CxmlCollectionState.Loaded)
{
pViewer.PivotProperties =
_cxml.ItemProperties.ToList();
pViewer.ItemTemplates =
_cxml.ItemTemplates;
pViewer.ItemsSource =
_cxml.Items;
}
}