XamlParse exception on a WP8.1 app created with VS2013 when using a LongListSelector with a databinding to an ObservableCollection.
Everything is fine until one removes an item from the collection. The strange thing is that the exception is generated only if the Canvas is positioned on Grid.Row="1".
If the canvas resides is on Grid.Row="0" everything is fine.
I made a simple example with just two databindings.
Exception
A first chance exception of type 'System.ArgumentException' occurred in System.Windows.ni.dll
Additional information: Value does not fall within the expected range.
- e {System.Windows.ApplicationUnhandledExceptionEventArgs} System.Windows.ApplicationUnhandledExceptionEventArgs
+ base {System.Windows.ApplicationUnhandledExceptionEventArgs} System.EventArgs {System.Windows.ApplicationUnhandledExceptionEventArgs}
- ExceptionObject {System.Windows.Markup.XamlParseException: [Line: 0 Position: 0] ---> System.Windows.Markup.XamlParseException: [Line: 0 Position: 0]
at MS.Internal.XcpImports.CheckHResult(UInt32 hr)
at MS.Internal.XcpImports.UIElement_Measure(UIElement element, Size availableSize)
at System.Windows.UIElement.Measure(Size availableSize)
at Microsoft.Phone.Controls.LongListSelector.RealizeDisplayItem(Iterator`1 iterator, RealizeOptions options)
at Microsoft.Phone.Controls.LongListSelector.RealizedRange.Append(RealizedRange nextRange, Double bottom)
at Microsoft.Phone.Controls.LongListSelector.AppendElement(RealizedRange range, RealizedRange nextRange, Double bottom)
at Microsoft.Phone.Controls.LongListSelector.HealElements(Rect requireRect, Rect allowRect, Boolean& areBoundsUpdated)
at Microsoft.Phone.Controls.LongListSelector.Balance(Boolean containerViewport)
at Microsoft.Phone.Controls.LongListSelector.MeasureOverride(Size availableSize)
at System.Windows.FrameworkElement.MeasureOverride(IntPtr nativeTarget, Double inWidth, Double inHeight, Double& outWidth, Double& outHeight)
--- End of inner exception stack trace ---} System.Exception {System.Windows.Markup.XamlParseException}
- [System.Windows.Markup.XamlParseException] {System.Windows.Markup.XamlParseException: [Line: 0 Position: 0] ---> System.Windows.Markup.XamlParseException: [Line: 0 Position: 0]
at MS.Internal.XcpImports.CheckHResult(UInt32 hr)
at MS.Internal.XcpImports.UIElement_Measure(UIElement element, Size availableSize)
at System.Windows.UIElement.Measure(Size availableSize)
at Microsoft.Phone.Controls.LongListSelector.RealizeDisplayItem(Iterator`1 iterator, RealizeOptions options)
at Microsoft.Phone.Controls.LongListSelector.RealizedRange.Append(RealizedRange nextRange, Double bottom)
at Microsoft.Phone.Controls.LongListSelector.AppendElement(RealizedRange range, RealizedRange nextRange, Double bottom)
at Microsoft.Phone.Controls.LongListSelector.HealElements(Rect requireRect, Rect allowRect, Boolean& areBoundsUpdated)
at Microsoft.Phone.Controls.LongListSelector.Balance(Boolean containerViewport)
at Microsoft.Phone.Controls.LongListSelector.MeasureOverride(Size availableSize)
at System.Windows.FrameworkElement.MeasureOverride(IntPtr nativeTarget, Double inWidth, Double inHeight, Double& outWidth, Double& outHeight)
--- End of inner exception stack trace ---} System.Windows.Markup.XamlParseException
+ base {System.Windows.Markup.XamlParseException: [Line: 0 Position: 0] ---> System.Windows.Markup.XamlParseException: [Line: 0 Position: 0]
at MS.Internal.XcpImports.CheckHResult(UInt32 hr)
at MS.Internal.XcpImports.UIElement_Measure(UIElement element, Size availableSize)
at System.Windows.UIElement.Measure(Size availableSize)
at Microsoft.Phone.Controls.LongListSelector.RealizeDisplayItem(Iterator`1 iterator, RealizeOptions options)
at Microsoft.Phone.Controls.LongListSelector.RealizedRange.Append(RealizedRange nextRange, Double bottom)
at Microsoft.Phone.Controls.LongListSelector.AppendElement(RealizedRange range, RealizedRange nextRange, Double bottom)
at Microsoft.Phone.Controls.LongListSelector.HealElements(Rect requireRect, Rect allowRect, Boolean& areBoundsUpdated)
at Microsoft.Phone.Controls.LongListSelector.Balance(Boolean containerViewport)
at Microsoft.Phone.Controls.LongListSelector.MeasureOverride(Size availableSize)
at System.Windows.FrameworkElement.MeasureOverride(IntPtr nativeTarget, Double inWidth, Double inHeight, Double& outWidth, Double& outHeight)
--- End of inner exception stack trace ---} System.SystemException {System.Windows.Markup.XamlParseException}
LineNumber 0 int
LinePosition 0 int
- Non-Public members
+ base {System.Windows.Markup.XamlParseException: [Line: 0 Position: 0] ---> System.Windows.Markup.XamlParseException: [Line: 0 Position: 0]
at MS.Internal.XcpImports.CheckHResult(UInt32 hr)
at MS.Internal.XcpImports.UIElement_Measure(UIElement element, Size availableSize)
at System.Windows.UIElement.Measure(Size availableSize)
at Microsoft.Phone.Controls.LongListSelector.RealizeDisplayItem(Iterator`1 iterator, RealizeOptions options)
at Microsoft.Phone.Controls.LongListSelector.RealizedRange.Append(RealizedRange nextRange, Double bottom)
at Microsoft.Phone.Controls.LongListSelector.AppendElement(RealizedRange range, RealizedRange nextRange, Double bottom)
at Microsoft.Phone.Controls.LongListSelector.HealElements(Rect requireRect, Rect allowRect, Boolean& areBoundsUpdated)
at Microsoft.Phone.Controls.LongListSelector.Balance(Boolean containerViewport)
at Microsoft.Phone.Controls.LongListSelector.MeasureOverride(Size availableSize)
at System.Windows.FrameworkElement.MeasureOverride(IntPtr nativeTarget, Double inWidth, Double inHeight, Double& outWidth, Double& outHeight)
--- End of inner exception stack trace ---} System.SystemException {System.Windows.Markup.XamlParseException}
_errorCode 2148468948 uint
_lineNumber 0 int
_linePosition 0 int
ErrorCode 2148468948 uint
- Data {System.Collections.ListDictionaryInternal} System.Collections.IDictionary {System.Collections.ListDictionaryInternal}
+ [System.Collections.ListDictionaryInternal] {System.Collections.ListDictionaryInternal} System.Collections.ListDictionaryInternal
IsFixedSize false bool
IsReadOnly false bool
+ Keys {System.Collections.ListDictionaryInternal.NodeKeyValueCollection} System.Collections.ICollection {System.Collections.ListDictionaryInternal.NodeKeyValueCollection}
+ Values {System.Collections.ListDictionaryInternal.NodeKeyValueCollection} System.Collections.ICollection {System.Collections.ListDictionaryInternal.NodeKeyValueCollection}
HelpLink null string
HResult -2146233087 int
- InnerException {System.Windows.Markup.XamlParseException: [Line: 0 Position: 0]
at MS.Internal.XcpImports.CheckHResult(UInt32 hr)
at MS.Internal.XcpImports.UIElement_Measure(UIElement element, Size availableSize)
at System.Windows.UIElement.Measure(Size availableSize)
at Microsoft.Phone.Controls.LongListSelector.RealizeDisplayItem(Iterator`1 iterator, RealizeOptions options)
at Microsoft.Phone.Controls.LongListSelector.RealizedRange.Append(RealizedRange nextRange, Double bottom)
at Microsoft.Phone.Controls.LongListSelector.AppendElement(RealizedRange range, RealizedRange nextRange, Double bottom)
at Microsoft.Phone.Controls.LongListSelector.HealElements(Rect requireRect, Rect allowRect, Boolean& areBoundsUpdated)
at Microsoft.Phone.Controls.LongListSelector.Balance(Boolean containerViewport)
at Microsoft.Phone.Controls.LongListSelector.MeasureOverride(Size availableSize)
at System.Windows.FrameworkElement.MeasureOverride(IntPtr nativeTarget, Double inWidth, Double inHeight, Double& outWidth, Double& outHeight)} System.Exception {System.Windows.Markup.XamlParseException}
+ [System.Windows.Markup.XamlParseException] {System.Windows.Markup.XamlParseException: [Line: 0 Position: 0]
at MS.Internal.XcpImports.CheckHResult(UInt32 hr)
at MS.Internal.XcpImports.UIElement_Measure(UIElement element, Size availableSize)
at System.Windows.UIElement.Measure(Size availableSize)
at Microsoft.Phone.Controls.LongListSelector.RealizeDisplayItem(Iterator`1 iterator, RealizeOptions options)
at Microsoft.Phone.Controls.LongListSelector.RealizedRange.Append(RealizedRange nextRange, Double bottom)
at Microsoft.Phone.Controls.LongListSelector.AppendElement(RealizedRange range, RealizedRange nextRange, Double bottom)
at Microsoft.Phone.Controls.LongListSelector.HealElements(Rect requireRect, Rect allowRect, Boolean& areBoundsUpdated)
at Microsoft.Phone.Controls.LongListSelector.Balance(Boolean containerViewport)
at Microsoft.Phone.Controls.LongListSelector.MeasureOverride(Size availableSize)
at System.Windows.FrameworkElement.MeasureOverride(IntPtr nativeTarget, Double inWidth, Double inHeight, Double& outWidth, Double& outHeight)} System.Windows.Markup.XamlParseException
- Data {System.Collections.ListDictionaryInternal} System.Collections.IDictionary {System.Collections.ListDictionaryInternal}
+ [System.Collections.ListDictionaryInternal] {System.Collections.ListDictionaryInternal} System.Collections.ListDictionaryInternal
IsFixedSize false bool
IsReadOnly false bool
+ Keys {System.Collections.ListDictionaryInternal.NodeKeyValueCollection} System.Collections.ICollection {System.Collections.ListDictionaryInternal.NodeKeyValueCollection}
+ Values {System.Collections.ListDictionaryInternal.NodeKeyValueCollection} System.Collections.ICollection {System.Collections.ListDictionaryInternal.NodeKeyValueCollection}
HelpLink null string
HResult -2146233087 int
+ InnerException null System.Exception
Message " [Line: 0 Position: 0]" string
Source "System.Windows" string
StackTrace " at MS.Internal.XcpImports.CheckHResult(UInt32 hr)\r\n at MS.Internal.XcpImports.UIElement_Measure(UIElement element, Size availableSize)\r\n at System.Windows.UIElement.Measure(Size availableSize)\r\n at Microsoft.Phone.Controls.LongListSelector.RealizeDisplayItem(Iterator`1 iterator, RealizeOptions options)\r\n at Microsoft.Phone.Controls.LongListSelector.RealizedRange.Append(RealizedRange nextRange, Double bottom)\r\n at Microsoft.Phone.Controls.LongListSelector.AppendElement(RealizedRange range, RealizedRange nextRange, Double bottom)\r\n at Microsoft.Phone.Controls.LongListSelector.HealElements(Rect requireRect, Rect allowRect, Boolean& areBoundsUpdated)\r\n at Microsoft.Phone.Controls.LongListSelector.Balance(Boolean containerViewport)\r\n at Microsoft.Phone.Controls.LongListSelector.MeasureOverride(Size availableSize)\r\n at System.Windows.FrameworkElement.MeasureOverride(IntPtr nativeTarget, Double inWidth, Double inHeight, Double& outWidth, Double& outHeight)" string
+ Static members
+ Non-Public members
Message " [Line: 0 Position: 0]" string
Source null string
StackTrace null string
+ Static members
- Non-Public members
+ [System.Windows.Markup.XamlParseException] {System.Windows.Markup.XamlParseException: [Line: 0 Position: 0] ---> System.Windows.Markup.XamlParseException: [Line: 0 Position: 0]
at MS.Internal.XcpImports.CheckHResult(UInt32 hr)
at MS.Internal.XcpImports.UIElement_Measure(UIElement element, Size availableSize)
at System.Windows.UIElement.Measure(Size availableSize)
at Microsoft.Phone.Controls.LongListSelector.RealizeDisplayItem(Iterator`1 iterator, RealizeOptions options)
at Microsoft.Phone.Controls.LongListSelector.RealizedRange.Append(RealizedRange nextRange, Double bottom)
at Microsoft.Phone.Controls.LongListSelector.AppendElement(RealizedRange range, RealizedRange nextRange, Double bottom)
at Microsoft.Phone.Controls.LongListSelector.HealElements(Rect requireRect, Rect allowRect, Boolean& areBoundsUpdated)
at Microsoft.Phone.Controls.LongListSelector.Balance(Boolean containerViewport)
at Microsoft.Phone.Controls.LongListSelector.MeasureOverride(Size availableSize)
at System.Windows.FrameworkElement.MeasureOverride(IntPtr nativeTarget, Double inWidth, Double inHeight, Double& outWidth, Double& outHeight)
--- End of inner exception stack trace ---} System.Windows.Markup.XamlParseException
_className "System.Windows.Markup.XamlParseException" string
+ _data {System.Collections.ListDictionaryInternal} System.Collections.IDictionary {System.Collections.ListDictionaryInternal}
_dynamicMethods null object
_exceptionMethod null System.Reflection.MethodBase
_exceptionMethodString null string
_helpURL null string
_HResult -2146233087 int
+ _innerException {System.Windows.Markup.XamlParseException: [Line: 0 Position: 0]
at MS.Internal.XcpImports.CheckHResult(UInt32 hr)
at MS.Internal.XcpImports.UIElement_Measure(UIElement element, Size availableSize)
at System.Windows.UIElement.Measure(Size availableSize)
at Microsoft.Phone.Controls.LongListSelector.RealizeDisplayItem(Iterator`1 iterator, RealizeOptions options)
at Microsoft.Phone.Controls.LongListSelector.RealizedRange.Append(RealizedRange nextRange, Double bottom)
at Microsoft.Phone.Controls.LongListSelector.AppendElement(RealizedRange range, RealizedRange nextRange, Double bottom)
at Microsoft.Phone.Controls.LongListSelector.HealElements(Rect requireRect, Rect allowRect, Boolean& areBoundsUpdated)
at Microsoft.Phone.Controls.LongListSelector.Balance(Boolean containerViewport)
at Microsoft.Phone.Controls.LongListSelector.MeasureOverride(Size availableSize)
at System.Windows.FrameworkElement.MeasureOverride(IntPtr nativeTarget, Double inWidth, Double inHeight, Double& outWidth, Double& outHeight)} System.Exception {System.Windows.Markup.XamlParseException}
+ _ipForWatsonBuckets 0 System.UIntPtr
_message " [Line: 0 Position: 0]" string
_remoteStackIndex 0 int
_remoteStackTraceString null string
_source null string
_stackTrace null object
_stackTraceString null string
_watsonBuckets null object
_xcode -532462766 int
+ _xptrs 0 System.IntPtr
+ IPForWatsonBuckets 0 System.UIntPtr
IsTransient false bool
RemoteStackTrace null string
WatsonBuckets null object
Handled false bool
+ Non-Public members
at MS.Internal.XcpImports.CheckHResult(UInt32 hr)
at MS.Internal.XcpImports.UIElement_Measure(UIElement element, Size availableSize)
at System.Windows.UIElement.Measure(Size availableSize)
at Microsoft.Phone.Controls.LongListSelector.RealizeDisplayItem(Iterator`1 iterator, RealizeOptions options)
at Microsoft.Phone.Controls.LongListSelector.RealizedRange.Append(RealizedRange nextRange, Double bottom)
at Microsoft.Phone.Controls.LongListSelector.AppendElement(RealizedRange range, RealizedRange nextRange, Double bottom)
at Microsoft.Phone.Controls.LongListSelector.HealElements(Rect requireRect, Rect allowRect, Boolean& areBoundsUpdated)
at Microsoft.Phone.Controls.LongListSelector.Balance(Boolean containerViewport)
at Microsoft.Phone.Controls.LongListSelector.MeasureOverride(Size availableSize)
at System.Windows.FrameworkElement.MeasureOverride(IntPtr nativeTarget, Double inWidth, Double inHeight, Double& outWidth, Double& outHeight)
> System.Windows.ni.dll!MS.Internal.XcpImports.CheckHResult(uint hr) Unknown
System.Windows.ni.dll!MS.Internal.XcpImports.SetValue(MS.Internal.IManagedPeerBase obj, System.Windows.DependencyProperty property, System.Windows.DependencyObject doh) Unknown
System.Windows.ni.dll!MS.Internal.XcpImports.SetValue(MS.Internal.IManagedPeerBase doh, System.Windows.DependencyProperty property, object obj) Unknown
System.Windows.ni.dll!System.Windows.DependencyObject.SetObjectValueToCore(System.Windows.DependencyProperty dp, object value) Unknown
System.Windows.ni.dll!System.Windows.DependencyObject.SetEffectiveValue(System.Windows.DependencyProperty property, ref System.Windows.EffectiveValueEntry newEntry, object newValue) Unknown
System.Windows.ni.dll!System.Windows.DependencyObject.UpdateEffectiveValue(System.Windows.DependencyProperty property, System.Windows.EffectiveValueEntry oldEntry, ref System.Windows.EffectiveValueEntry newEntry, System.Windows.DependencyObject.ValueOperation operation) Unknown
System.Windows.ni.dll!System.Windows.DependencyObject.RefreshExpression(System.Windows.DependencyProperty dp) Unknown
System.Windows.ni.dll!System.Windows.Data.BindingExpression.SendDataToTarget() Unknown
System.Windows.ni.dll!System.Windows.Data.BindingExpression.SourceAcquired() Unknown
System.Windows.ni.dll!System.Windows.Data.BindingExpression.System.Windows.IDataContextChangedListener.OnDataContextChanged(object sender, System.Windows.DataContextChangedEventArgs e) Unknown
System.Windows.ni.dll!System.Windows.Data.BindingExpression.DataContextChanged(object sender, System.Windows.DataContextChangedEventArgs e) Unknown
System.Windows.ni.dll!System.Windows.FrameworkElement.OnDataContextChanged(System.Windows.DataContextChangedEventArgs e) Unknown
System.Windows.ni.dll!System.Windows.FrameworkElement.OnAncestorDataContextChanged(System.Windows.DataContextChangedEventArgs e) Unknown
System.Windows.ni.dll!System.Windows.FrameworkElement.NotifyDataContextChanged(System.Windows.DataContextChangedEventArgs e) Unknown
System.Windows.ni.dll!System.Windows.FrameworkElement.OnAncestorDataContextChanged(System.Windows.DataContextChangedEventArgs e) Unknown
System.Windows.ni.dll!System.Windows.FrameworkElement.NotifyDataContextChanged(System.Windows.DataContextChangedEventArgs e) Unknown
System.Windows.ni.dll!System.Windows.FrameworkElement.OnAncestorDataContextChanged(System.Windows.DataContextChangedEventArgs e) Unknown
System.Windows.ni.dll!System.Windows.FrameworkElement.NotifyDataContextChanged(System.Windows.DataContextChangedEventArgs e) Unknown
System.Windows.ni.dll!System.Windows.FrameworkElement.OnPropertyChanged(System.Windows.DependencyProperty dp) Unknown
System.Windows.ni.dll!System.Windows.DependencyObject.RaisePropertyChangeNotifications(System.Windows.DependencyProperty dp, object oldValue, object newValue) Unknown
System.Windows.ni.dll!System.Windows.DependencyObject.UpdateEffectiveValue(System.Windows.DependencyProperty property, System.Windows.EffectiveValueEntry oldEntry, ref System.Windows.EffectiveValueEntry newEntry, System.Windows.DependencyObject.ValueOperation operation) Unknown
System.Windows.ni.dll!System.Windows.DependencyObject.SetValueInternal(System.Windows.DependencyProperty dp, object value, bool allowReadOnlySet) Unknown
System.Windows.ni.dll!System.Windows.FrameworkElement.DataContext.set(object value) Unknown
[Native to Managed Transition]
System.Windows.ni.dll!MS.Internal.FrameworkCallbacks.SetPropertyOrAddItem(object target, System.Reflection.PropertyInfo propertyInfo, object value, int typeIndex, string propertyName) Unknown
System.Windows.ni.dll!MS.Internal.FrameworkCallbacks.SetNonAttachedProperty(object target, string propertyName, object propertyValue, int typeIndex) Unknown
System.Windows.ni.dll!MS.Internal.FrameworkCallbacks.SetValueToProperty(object target, string propertyName, object propertyValue, int typeIndex, string attachedDPOwnerNamespace, string attachedDPOwnerAssembly) Unknown
System.Windows.ni.dll!MS.Internal.FrameworkCallbacks.SetProperty(System.IntPtr nativeTarget, string propertyName, ref MS.Internal.CValue propertyValue, int typeIndex, string attachedDPOwnerNamespace, string attachedDPOwnerAssembly) Unknown
[Native to Managed Transition]
[Managed to Native Transition]
System.Windows.ni.dll!MS.Internal.XcpImports.UIElement_Measure(System.Windows.UIElement element, System.Windows.Size availableSize) Unknown
System.Windows.ni.dll!System.Windows.UIElement.Measure(System.Windows.Size availableSize) Unknown
Microsoft.Phone.ni.dll!Microsoft.Phone.Controls.LongListSelector.RealizeDisplayItem(Microsoft.Phone.Controls.Iterator iterator, Microsoft.Phone.Controls.LongListSelector.RealizeOptions options) Unknown
Microsoft.Phone.ni.dll!Microsoft.Phone.Controls.LongListSelector.RealizedRange.Append(Microsoft.Phone.Controls.LongListSelector.RealizedRange nextRange, double bottom) Unknown
Microsoft.Phone.ni.dll!Microsoft.Phone.Controls.LongListSelector.AppendElement(Microsoft.Phone.Controls.LongListSelector.RealizedRange range, Microsoft.Phone.Controls.LongListSelector.RealizedRange nextRange, double bottom) Unknown
Microsoft.Phone.ni.dll!Microsoft.Phone.Controls.LongListSelector.HealElements(System.Windows.Rect requireRect, System.Windows.Rect allowRect, out bool areBoundsUpdated) Unknown
Microsoft.Phone.ni.dll!Microsoft.Phone.Controls.LongListSelector.Balance(bool containerViewport) Unknown
Microsoft.Phone.ni.dll!Microsoft.Phone.Controls.LongListSelector.MeasureOverride(System.Windows.Size availableSize) Unknown
System.Windows.ni.dll!System.Windows.FrameworkElement.MeasureOverride(System.IntPtr nativeTarget, double inWidth, double inHeight, out double outWidth, out double outHeight) Unknown
Xaml Example
<phone:PivotItem x:Name="PivotMyPage" Header="My Page" >
<Grid x:Name="LayoutMyPage" Background="Transparent">
<Grid.RowDefinitions>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="*" />
</Grid.ColumnDefinitions>
<phone:LongListSelector Name="LLS_MyItems" Grid.Row="0" Grid.Column="0" ItemsSource="{Binding myItemCollection}" >
<phone:LongListSelector.ItemTemplate>
<DataTemplate x:Name="DataTemplateMyPage">
<Grid>
<Grid.RowDefinitions>
<RowDefinition Height="Auto" />
<RowDefinition Height="Auto" />
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="Auto" />
<ColumnDefinition Width="Auto" />
</Grid.ColumnDefinitions>
<TextBlock Grid.Row="0" Grid.Column="0" Text="{Binding Title}" HorizontalAlignment="Left" />
<Canvas Grid.Row="1" Grid.Column="1" Width="50" Height="50" HorizontalAlignment="Center" VerticalAlignment="Center" >
<Polyline Canvas.Left="0" Canvas.Top="0" Points="{Binding PC}" Stroke="Gray" StrokeThickness="4" HorizontalAlignment="Center" VerticalAlignment="Center" />
</Canvas>
</Grid>
</DataTemplate>
</phone:LongListSelector.ItemTemplate>
</phone:LongListSelector>
</Grid>
Code Behind
bool mainPivotLoaded = false;
private ObservableCollection<MyItem> myItemCollection = new ObservableCollection<MyItem>();
public MainPage()
{
InitializeComponent();
DataContext = App.ViewModel;
LLS_MyItems.ItemsSource = myItemCollection;
for (int x = 0; x < 20; x++)
{
MyItem i = new MyItem();
i.Title = "Hello" + x.ToString();
myItemCollection.Add(i);
}
DispatcherTimer dt = new System.Windows.Threading.DispatcherTimer();
dt.Tick += new EventHandler(Dt_Tick);
dt.Interval = new TimeSpan(0, 0, 0, 1, 0);
dt.Start();
}
private void Dt_Tick(object sender, EventArgs e)
{
if (myItemCollection.Count > 0 && mainPivotLoaded)
myItemCollection.RemoveAt(0);
}
private void MainPivot_Loaded(object sender, RoutedEventArgs e)
{
mainPivotLoaded = true;
}
class MyItem : INotifyPropertyChanged
{
public string Title { get; set; }
public PointCollection PC { get; set; }
public event PropertyChangedEventHandler PropertyChanged;
public void NotifyPropertyChanged(String propertyName)
{
if (PropertyChanged != null)
PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
}
public MyItem()
{
PC = new PointCollection();
PC.Add(new Point(1, 1));
PC.Add(new Point(10, 10));
}
}
