本文介绍了wp7芒果中的DataTemplateSelector的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我需要在我的应用程序数据模板选择。我发现 。
我的项目升级到7.1后设置模板时，我得到未指定的错误。
我试图把他们的博客上发布的示例项目，并升级到芒果，它仍然有效。我不明白我做错了，因为它看起来像这样的代码是好的芒果。 ？
任何建议。
<电网X：NAME =LayoutRoot背景=透明VerticalAlignment =弹力>
< StackPanel的VerticalAlignment =拉伸>
< StackPanel的方向=横向>
< TextBlock的X：名称=nameBlockGrid.Row =0Grid.Column =0VerticalAlignment =中心文本=标识符/>
<文本框X：NAME =nameTextBoxGrid.Row =0Grid.Column =1文本={绑定路径=标识符，模式=双向}HEIGHT =72WIDTH = 410框TextChanged =nameTextBox_TextChanged/>
< / StackPanel的>
< StackPanel的Grid.Row =3Grid.Column =1背景=黑VerticalAlignment =拉伸>
<列表框保证金=12,12,0,0NAME =listBox1中背景=透明的ItemsSource ={绑定路径= PropertiesCollection}VerticalAlignment =拉伸HEIGHT =300>
< ListBox.ItemTemplate>
<&DataTemplate的GT;
<视图模型：ParameterTemplateSelector CONTENT ={结合}>
<视图模型：ParameterTemplateSelector.TextDataTemplate>
<&DataTemplate的GT;
<网格和GT;
< Grid.ColumnDefinitions>
< ColumnDefinition WIDTH =100>< / ColumnDefinition>
将; ColumnDefinition宽度=*>&下; / ColumnDefinition>
< /Grid.ColumnDefinitions>
< TextBlock的文本={结合重点}VerticalAlignment =中心Grid.Column =0/>
<文本框名称=propertyTextBox文本={绑定值，模式=双向}Grid.Column =1WIDTH =400框TextChanged =propertyTextBox_TextChanged/>
< /网格和GT;
< / DataTemplate中>
< /视图模型：ParameterTemplateSelector.TextDataTemplate>
<视图模型：ParameterTemplateSelector.NumberDataTemplate>
<&DataTemplate的GT;
<网格和GT;
< Grid.ColumnDefinitions>
< ColumnDefinition WIDTH =100>< / ColumnDefinition>
将; ColumnDefinition宽度=*>&下; / ColumnDefinition>
< /Grid.ColumnDefinitions>
< TextBlock的文本={结合重点}VerticalAlignment =中心Grid.Column =0/>
<文本框名称=propertyTextBox文本={绑定值，模式=双向}Grid.Column =1WIDTH =400框TextChanged =propertyTextBox_TextChanged/>
< /网格和GT;
< / DataTemplate中>
< /视图模型：ParameterTemplateSelector.NumberDataTemplate>
<视图模型：ParameterTemplateSelector.DateDataTemplate>
<&DataTemplate的GT;
<网格和GT;
< Grid.ColumnDefinitions>
< ColumnDefinition WIDTH =100>< / ColumnDefinition>
将; ColumnDefinition宽度=*>&下; / ColumnDefinition>
< /Grid.ColumnDefinitions>
< TextBlock的文本={结合重点}VerticalAlignment =中心Grid.Column =0/>
<工具箱：DatePicker的Grid.Column =1WIDTH =400VALUE ={绑定值，模式=双向}=的ValueChangedDatePicker_ValueChanged/>
< /网格和GT;
< / DataTemplate中>
< /视图模型：ParameterTemplateSelector.DateDataTemplate>
<视图模型：ParameterTemplateSelector.TimeDataTemplate>
<&DataTemplate的GT;
<网格和GT;
< Grid.ColumnDefinitions>
< ColumnDefinition WIDTH =100>< / ColumnDefinition>
将; ColumnDefinition宽度=*>&下; / ColumnDefinition>
< /Grid.ColumnDefinitions>
< TextBlock的文本={结合重点}VerticalAlignment =中心Grid.Column =0/>
<工具箱：TimePicker Grid.Column =1WIDTH =400VALUE ={绑定值，模式=双向}=的ValueChangedTimePicker_ValueChanged/>
< /网格和GT;
< / DataTemplate中>
< /视图模型：ParameterTemplateSelector.TimeDataTemplate>
< /视图模型：ParameterTemplateSelector>
< / DataTemplate中>
< /ListBox.ItemTemplate>
< /列表框>
< / StackPanel的>
< / StackPanel的>
< /网格和GT;
公共类ParameterTemplateSelector：DataTemplateSelector
{
公众的DataTemplate TextDataTemplate
{
搞定;
组;
}
公众的DataTemplate NumberDataTemplate
{
获得;
组;
}
公众的DataTemplate DateDataTemplate
{
获得;
组;
}
公众的DataTemplate TimeDataTemplate
{
获得;
组;
}
公众的DataTemplate PictureDataTemplate
{
获得;
组;
}
公众的DataTemplate NonParamDataTemplate
{
获得;
组;
}
公众覆盖的DataTemplate SelectTemplate（对象项目，DependencyObject的容器）
{
字符串类型=;
如果（产品IPARAM）
{
IPARAM参数=项目作为IPARAM;
型= parameter.Type;
}
，否则如果（产品键值）
{
键值K =项目作为键值;
型= k.Type;
}
开关（类型）
{
案字符串：
返回TextDataTemplate;
案文本：
返回TextDataTemplate;
案数：
返回NumberDataTemplate;
案日期：
返回DateDataTemplate;
案时间：
返回TimeDataTemplate;
案图片：
返回PictureDataTemplate;
默认：
返回TextDataTemplate;
}
}
}
公共抽象类DataTemplateSelector：ContentControl中
{
公共虚拟的DataTemplate SelectTemplate （对象项目，DependencyObject的容器）
{
返回NULL;
}
保护覆盖无效OnContentChanged（对象oldContent，对象newContent）
{
base.OnContentChanged（oldContent，newContent）;
的ContentTemplate = SelectTemplate（newContent，这一点）;
}
}
的
例外，我得到的是：
System.Exception的发生
消息=未指定的错误
堆栈跟踪：
在MS.Internal.XcpImports.CheckHResult（ UInt32的小时）
在MS.Internal.XcpImports.FrameworkElement_MeasureOverride（FrameworkElement的元素，大小availableSize）
在System.Windows.FrameworkElement.MeasureOverride（尺寸availableSize）
在System.Windows.FrameworkElement.MeasureOverride （IntPtr的nativeTarget，双inWidth，双inHeight，双&安培; outWidth，双&安培; outHeight）
在MS.Internal.XcpImports.MeasureOverrideNative（IntPtr的元素，单inWidth，单inHeight，单&功放; outWidth，单&安培; outHeight）
在MS.Internal.XcpImports.FrameworkElement_MeasureOverride（FrameworkElement的元素，大小availableSize）
在System.Windows.FrameworkElement.MeasureOverride（尺寸availableSize）
在System.Windows.FrameworkElement.MeasureOverride（IntPtr的nativeTarget，双inWidth，双inHeight，双&安培; outWidth，双&安培; outHeight）
在MS.Internal.XcpImports.MeasureNative（IntPtr的元素，单inWidth，单inHeight）
在MS.Internal.XcpImports.UIElement_Measure（的UIElement元素，大小availableSize）
的系统。 Windows.UIElement.Measure（尺寸availableSize）
在System.Windows.Controls.VirtualizingStackPanel.MeasureChild（儿童的UIElement，大小layoutSlotSize）
在System.Windows.Controls.VirtualizingStackPanel.MeasureOverride（大小限制）
在System.Windows.FrameworkElement.MeasureOverride（IntPtr的nativeTarget，双inWidth，双inHeight，双&安培; outWidth，双&安培; outHeight）
在MS.Internal.XcpImports.MeasureOverrideNative（IntPtr的元素，单inWidth，单inHeight，单&功放; outWidth，单&安培; outHeight）在MS.Internal.XcpImports.FrameworkElement_MeasureOverride
（FrameworkElement的元素，大小availableSize）
在System.Windows.FrameworkElement.MeasureOverride（尺寸availableSize）
的系统。 Windows.Controls.ScrollContentPresenter.MeasureOverride（大小限制）
在System.Windows.FrameworkElement.MeasureOverride（IntPtr的nativeTarget，双inWidth，双inHeight，双&安培; outWidth，双&安培; outHeight）
在MS.Internal.XcpImports.MeasureNative（IntPtr的元素，单inWidth，单inHeight）
在MS.Internal.XcpImports.UIElement_Measure（的UIElement元素，大小availableSize）
的系统。 Windows.UIElement.Measure（尺寸availableSize）
在System.Windows.Controls.ScrollViewer.MeasureOverride（大小限制）
在System.Windows.FrameworkElement.MeasureOverride（IntPtr的nativeTarget，双inWidth，双inHeight，双&放大器; outWidth，双&安培; outHeight）
在MS.Internal.XcpImports.MeasureOverrideNative（IntPtr的元素，单inWidth，单inHeight，单&功放; outWidth，单&安培; outHeight）
在MS.Internal.XcpImports.FrameworkElement_MeasureOverride（ FrameworkElement的元素，大小availableSize）
在System.Windows.FrameworkElement.MeasureOverride（尺寸availableSize）
在System.Windows.FrameworkElement.MeasureOverride（IntPtr的nativeTarget，双inWidth，双inHeight，双&安培; outWidth，双&安培; outHeight）
在MS.Internal.XcpImports.MeasureOverrideNative（IntPtr的元素，单inWidth，单inHeight，单，放大器; outWidth，单&功放; outHeight）
在MS.Internal.XcpImports.FrameworkElement_MeasureOverride（FrameworkElement的元素，大小availableSize）
在System.Windows.FrameworkElement.MeasureOverride（尺寸availableSize）
在System.Windows.FrameworkElement.MeasureOverride（ IntPtr的nativeTarget，双inWidth，双inHeight，双&安培; outWidth，双&安培; outHeight）
在MS.Internal.XcpImports.MeasureOverrideNative（IntPtr的元素，单inWidth，单inHeight，单&功放; outWidth，单&安培; outHeight）
。在MS.Internal.XcpImports.FrameworkElement_MeasureOverride（FrameworkElement的元素，大小availableSize）
在System.Windows.FrameworkElement.MeasureOverride（尺寸availableSize）
在Microsoft.Phone.Controls.PivotItem.MeasureOverride（尺寸availableSize）
在System.Windows.FrameworkElement.MeasureOverride（IntPtr的nativeTarget，双inWidth，双inHeight，双&安培; outWidth，双&安培; outHeight）
在MS.Internal.XcpImports.MeasureOverrideNative（IntPtr的元素，单inWidth，单inHeight，单&功放; outWidth，单&功放; outHeight）在MS.Internal.XcpImports.FrameworkElement_MeasureOverride（FrameworkElement的元素，大小availableSize）
。在System.Windows.FrameworkElement.MeasureOverride
（面积availableSize）
在Microsoft.Phone.Controls.Pivot。的MeasureOverride（尺寸availableSize）
在System.Windows.FrameworkElement.MeasureOverride（IntPtr的nativeTarget，双inWidth，双inHeight，双&安培; outWidth，双&安培; outHeight）
在MS.Internal.XcpImports.UpdateLayoutNative（IntPtr的元素在System.Windows.UIElement.UpdateLayout在MS.Internal.XcpImports.UIElement_UpdateLayout）
（的UIElement元素）
（）
在Microsoft.Phone.Controls.Pivot.OnItemsChanged（NotifyCollectionChangedEventArgs E）
。在System.Windows.Controls.ItemsControl.OnItemCollectionChanged（对象发件人，NotifyCollectionChangedEventArgs E）
在System.Windows.Controls.ItemCollection.NotifyCollectionChanged（NotifyCollectionChangedEventArgs E）
在System.Windows.Controls.ItemCollection .UpdateItemsSourceList（IEnumerable的newItemsSource）
在System.Windows.Controls.ItemsControl.ItemsSourceChanged（DependencyObject的D，DependencyPropertyChangedEventArgs E）
在System.Windows.DependencyObject.RaisePropertyChangeNotifications（DP的DependencyProperty，对象的属性oldValue，对象newValue）以
。在System.Windows.DependencyObject.UpdateEffectiveValue（DependencyProperty的财产，EffectiveValueEntry oldEntry，EffectiveValueEntry&安培;在System.Windows.Data.BindingExpression.RefreshExpression新条目，ValueOperation操作）
在System.Windows.DependencyObject.RefreshExpression（DP的DependencyProperty）
（）
在System.Windows.Data.BindingExpression。 SendDataToTarget（）
在System.Windows.Data.BindingExpression.SourceAcquired（）在System.Windows.Data.BindingExpression.System.Windows.IDataContextChangedListener.OnDataContextChanged
（对象发件人，DataContextChangedEventArgs E）
在System.Windows.Data.BindingExpression.DataContextChanged（对象发件人，DataContextChangedEventArgs E）
在System.Windows.FrameworkElement.OnDataContextChanged（DataContextChangedEventArgs E）
在System.Windows.FrameworkElement.OnAncestorDataContextChanged（DataContextChangedEventArgs E）
。在System.Windows.FrameworkElement.NotifyDataContextChanged（DataContextChangedEventArgs E）
在System.Windows.FrameworkElement.OnAncestorDataContextChanged在System.Windows.FrameworkElement.NotifyDataContextChanged（DataContextChangedEventArgs E）
（DataContextChangedEventArgs E）
。在System.Windows.FrameworkElement.OnPropertyChanged（DP的DependencyProperty）
在System.Windows.DependencyObject.RaisePropertyChangeNotifications（DP的DependencyProperty，对象的属性oldValue，对象newValue）以
在System.Windows.DependencyObject.UpdateEffectiveValue（财产的DependencyProperty ，EffectiveValueEntry oldEntry，EffectiveValueEntry&安培;新条目，ValueOperation操作）美元，System.Windows.DependencyObject.SetValueInternal（DP的DependencyProperty，对象的值，布尔allowReadOnlySet）
在System.Windows.DependencyObject.SetValueInternal（DP的DependencyProperty，对象的值）
B $ B在System.Windows.DependencyObject.SetValue（DP的DependencyProperty，对象的值）
在System.Windows.FrameworkElement.set_DataContext（对象的值）
在WPUserControls.ViewModel.ItemsTypeViewModel.AddItem（itemInstance itemInstance）
。在WPUserControls.ViewModel.ItemsTypePageViewModel.AddNewItemInstance（）
在WPUserControls.Views.ItemsTypePageView.AddItem（）
在WPUserControls.Views.ItemsTypePageView.addIcon_Click（对象发件人，EventArgs五）
在微软.Phone.Shell.ApplicationBarItemContainer.FireEventHandler（事件处理程序处理程序，对象发件人，EventArgs参数）
在Microsoft.Phone.Shell.ApplicationBarIconButton.ClickEvent（）
在Microsoft.Phone.Shell.ApplicationBarIconButtonContainer.ClickEvent（）在Microsoft.Phone.Shell.ApplicationBar.OnCommand（UInt32的id命令）
在Microsoft.Phone.Shell.Interop.NativeCallbackInteropWrapper.OnCommand（UInt32的id命令）
解决方案
在我安装SDK RC，它是固定的！我想这是一个MS错误。
I need a data template selector in my app. I found this blog that worked great on 7.0.After upgrading my project to 7.1 I get "unspecified error" when setting the template.I tried to take the sample project they publish on the blog and upgrade it to mango, and it still works. I don't get what I do wrong, because it seems like this code is Ok for mango.Any suggestions?
<Grid x:Name="LayoutRoot" Background="Transparent" VerticalAlignment="Stretch" >
<StackPanel VerticalAlignment="Stretch">
<StackPanel Orientation="Horizontal">
<TextBlock x:Name="nameBlock" Grid.Row="0" Grid.Column="0" VerticalAlignment="Center" Text="Identifier:" />
<TextBox x:Name="nameTextBox" Grid.Row="0" Grid.Column="1" Text="{Binding Path=Identifier, Mode=TwoWay}" Height="72" Width="410" TextChanged="nameTextBox_TextChanged"/>
</StackPanel>
<StackPanel Grid.Row="3" Grid.Column="1" Background="Black" VerticalAlignment="Stretch" >
<ListBox Margin="12,12,0,0" Name="listBox1" Background="Transparent" ItemsSource="{Binding Path=PropertiesCollection}" VerticalAlignment="Stretch" Height="300" >
<ListBox.ItemTemplate>
<DataTemplate>
<ViewModel:ParameterTemplateSelector Content="{Binding}">
<ViewModel:ParameterTemplateSelector.TextDataTemplate>
<DataTemplate>
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="100"></ColumnDefinition>
<ColumnDefinition Width="*"></ColumnDefinition>
</Grid.ColumnDefinitions>
<TextBlock Text="{Binding Key}" VerticalAlignment="Center" Grid.Column="0" />
<TextBox Name="propertyTextBox" Text="{Binding Value, Mode=TwoWay}" Grid.Column="1" Width="400" TextChanged="propertyTextBox_TextChanged" />
</Grid>
</DataTemplate>
</ViewModel:ParameterTemplateSelector.TextDataTemplate>
<ViewModel:ParameterTemplateSelector.NumberDataTemplate>
<DataTemplate>
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="100"></ColumnDefinition>
<ColumnDefinition Width="*"></ColumnDefinition>
</Grid.ColumnDefinitions>
<TextBlock Text="{Binding Key}" VerticalAlignment="Center" Grid.Column="0" />
<TextBox Name="propertyTextBox" Text="{Binding Value, Mode=TwoWay}" Grid.Column="1" Width="400" TextChanged="propertyTextBox_TextChanged" />
</Grid>
</DataTemplate>
</ViewModel:ParameterTemplateSelector.NumberDataTemplate>
<ViewModel:ParameterTemplateSelector.DateDataTemplate>
<DataTemplate>
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="100"></ColumnDefinition>
<ColumnDefinition Width="*"></ColumnDefinition>
</Grid.ColumnDefinitions>
<TextBlock Text="{Binding Key}" VerticalAlignment="Center" Grid.Column="0" />
<toolkit:DatePicker Grid.Column="1" Width="400" Value="{Binding Value, Mode=TwoWay}" ValueChanged="DatePicker_ValueChanged"/>
</Grid>
</DataTemplate>
</ViewModel:ParameterTemplateSelector.DateDataTemplate>
<ViewModel:ParameterTemplateSelector.TimeDataTemplate>
<DataTemplate>
<Grid>
<Grid.ColumnDefinitions>
<ColumnDefinition Width="100"></ColumnDefinition>
<ColumnDefinition Width="*"></ColumnDefinition>
</Grid.ColumnDefinitions>
<TextBlock Text="{Binding Key}" VerticalAlignment="Center" Grid.Column="0" />
<toolkit:TimePicker Grid.Column="1" Width="400" Value="{Binding Value, Mode=TwoWay}" ValueChanged="TimePicker_ValueChanged"/>
</Grid>
</DataTemplate>
</ViewModel:ParameterTemplateSelector.TimeDataTemplate>
</ViewModel:ParameterTemplateSelector>
</DataTemplate>
</ListBox.ItemTemplate>
</ListBox>
</StackPanel>
</StackPanel>
</Grid>
public class ParameterTemplateSelector : DataTemplateSelector
{
public DataTemplate TextDataTemplate
{
get;
set;
}
public DataTemplate NumberDataTemplate
{
get;
set;
}
public DataTemplate DateDataTemplate
{
get;
set;
}
public DataTemplate TimeDataTemplate
{
get;
set;
}
public DataTemplate PictureDataTemplate
{
get;
set;
}
public DataTemplate NonParamDataTemplate
{
get;
set;
}
public override DataTemplate SelectTemplate(object item, DependencyObject container)
{
string type = "";
if (item is IParam)
{
IParam parameter = item as IParam;
type = parameter.Type;
}
else if (item is KeyValue)
{
KeyValue k = item as KeyValue;
type = k.Type;
}
switch (type)
{
case "String":
return TextDataTemplate;
case "Text":
return TextDataTemplate;
case "Number":
return NumberDataTemplate;
case "Date":
return DateDataTemplate;
case "Time":
return TimeDataTemplate;
case "Picture":
return PictureDataTemplate;
default:
return TextDataTemplate;
}
}
}
public abstract class DataTemplateSelector : ContentControl
{
public virtual DataTemplate SelectTemplate(object item, DependencyObject container)
{
return null;
}
protected override void OnContentChanged(object oldContent, object newContent)
{
base.OnContentChanged(oldContent, newContent);
ContentTemplate = SelectTemplate(newContent, this);
}
}
The exception i get is:
System.Exception occurred
Message=Unspecified error
StackTrace:
at MS.Internal.XcpImports.CheckHResult(UInt32 hr)
at MS.Internal.XcpImports.FrameworkElement_MeasureOverride(FrameworkElement element, Size availableSize)
at System.Windows.FrameworkElement.MeasureOverride(Size availableSize)
at System.Windows.FrameworkElement.MeasureOverride(IntPtr nativeTarget, Double inWidth, Double inHeight, Double& outWidth, Double& outHeight)
at MS.Internal.XcpImports.MeasureOverrideNative(IntPtr element, Single inWidth, Single inHeight, Single& outWidth, Single& outHeight)
at MS.Internal.XcpImports.FrameworkElement_MeasureOverride(FrameworkElement element, Size availableSize)
at System.Windows.FrameworkElement.MeasureOverride(Size availableSize)
at System.Windows.FrameworkElement.MeasureOverride(IntPtr nativeTarget, Double inWidth, Double inHeight, Double& outWidth, Double& outHeight)
at MS.Internal.XcpImports.MeasureNative(IntPtr element, Single inWidth, Single inHeight)
at MS.Internal.XcpImports.UIElement_Measure(UIElement element, Size availableSize)
at System.Windows.UIElement.Measure(Size availableSize)
at System.Windows.Controls.VirtualizingStackPanel.MeasureChild(UIElement child, Size layoutSlotSize)
at System.Windows.Controls.VirtualizingStackPanel.MeasureOverride(Size constraint)
at System.Windows.FrameworkElement.MeasureOverride(IntPtr nativeTarget, Double inWidth, Double inHeight, Double& outWidth, Double& outHeight)
at MS.Internal.XcpImports.MeasureOverrideNative(IntPtr element, Single inWidth, Single inHeight, Single& outWidth, Single& outHeight)
at MS.Internal.XcpImports.FrameworkElement_MeasureOverride(FrameworkElement element, Size availableSize)
at System.Windows.FrameworkElement.MeasureOverride(Size availableSize)
at System.Windows.Controls.ScrollContentPresenter.MeasureOverride(Size constraint)
at System.Windows.FrameworkElement.MeasureOverride(IntPtr nativeTarget, Double inWidth, Double inHeight, Double& outWidth, Double& outHeight)
at MS.Internal.XcpImports.MeasureNative(IntPtr element, Single inWidth, Single inHeight)
at MS.Internal.XcpImports.UIElement_Measure(UIElement element, Size availableSize)
at System.Windows.UIElement.Measure(Size availableSize)
at System.Windows.Controls.ScrollViewer.MeasureOverride(Size constraint)
at System.Windows.FrameworkElement.MeasureOverride(IntPtr nativeTarget, Double inWidth, Double inHeight, Double& outWidth, Double& outHeight)
at MS.Internal.XcpImports.MeasureOverrideNative(IntPtr element, Single inWidth, Single inHeight, Single& outWidth, Single& outHeight)
at MS.Internal.XcpImports.FrameworkElement_MeasureOverride(FrameworkElement element, Size availableSize)
at System.Windows.FrameworkElement.MeasureOverride(Size availableSize)
at System.Windows.FrameworkElement.MeasureOverride(IntPtr nativeTarget, Double inWidth, Double inHeight, Double& outWidth, Double& outHeight)
at MS.Internal.XcpImports.MeasureOverrideNative(IntPtr element, Single inWidth, Single inHeight, Single& outWidth, Single& outHeight)
at MS.Internal.XcpImports.FrameworkElement_MeasureOverride(FrameworkElement element, Size availableSize)
at System.Windows.FrameworkElement.MeasureOverride(Size availableSize)
at System.Windows.FrameworkElement.MeasureOverride(IntPtr nativeTarget, Double inWidth, Double inHeight, Double& outWidth, Double& outHeight)
at MS.Internal.XcpImports.MeasureOverrideNative(IntPtr element, Single inWidth, Single inHeight, Single& outWidth, Single& outHeight)
at MS.Internal.XcpImports.FrameworkElement_MeasureOverride(FrameworkElement element, Size availableSize)
at System.Windows.FrameworkElement.MeasureOverride(Size availableSize)
at Microsoft.Phone.Controls.PivotItem.MeasureOverride(Size availableSize)
at System.Windows.FrameworkElement.MeasureOverride(IntPtr nativeTarget, Double inWidth, Double inHeight, Double& outWidth, Double& outHeight)
at MS.Internal.XcpImports.MeasureOverrideNative(IntPtr element, Single inWidth, Single inHeight, Single& outWidth, Single& outHeight)
at MS.Internal.XcpImports.FrameworkElement_MeasureOverride(FrameworkElement element, Size availableSize)
at System.Windows.FrameworkElement.MeasureOverride(Size availableSize)
at Microsoft.Phone.Controls.Pivot.MeasureOverride(Size availableSize)
at System.Windows.FrameworkElement.MeasureOverride(IntPtr nativeTarget, Double inWidth, Double inHeight, Double& outWidth, Double& outHeight)
at MS.Internal.XcpImports.UpdateLayoutNative(IntPtr element)
at MS.Internal.XcpImports.UIElement_UpdateLayout(UIElement element)
at System.Windows.UIElement.UpdateLayout()
at Microsoft.Phone.Controls.Pivot.OnItemsChanged(NotifyCollectionChangedEventArgs e)
at System.Windows.Controls.ItemsControl.OnItemCollectionChanged(Object sender, NotifyCollectionChangedEventArgs e)
at System.Windows.Controls.ItemCollection.NotifyCollectionChanged(NotifyCollectionChangedEventArgs e)
at System.Windows.Controls.ItemCollection.UpdateItemsSourceList(IEnumerable newItemsSource)
at System.Windows.Controls.ItemsControl.ItemsSourceChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
at System.Windows.DependencyObject.RaisePropertyChangeNotifications(DependencyProperty dp, Object oldValue, Object newValue)
at System.Windows.DependencyObject.UpdateEffectiveValue(DependencyProperty property, EffectiveValueEntry oldEntry, EffectiveValueEntry& newEntry, ValueOperation operation)
at System.Windows.DependencyObject.RefreshExpression(DependencyProperty dp)
at System.Windows.Data.BindingExpression.RefreshExpression()
at System.Windows.Data.BindingExpression.SendDataToTarget()
at System.Windows.Data.BindingExpression.SourceAcquired()
at System.Windows.Data.BindingExpression.System.Windows.IDataContextChangedListener.OnDataContextChanged(Object sender, DataContextChangedEventArgs e)
at System.Windows.Data.BindingExpression.DataContextChanged(Object sender, DataContextChangedEventArgs e)
at System.Windows.FrameworkElement.OnDataContextChanged(DataContextChangedEventArgs e)
at System.Windows.FrameworkElement.OnAncestorDataContextChanged(DataContextChangedEventArgs e)
at System.Windows.FrameworkElement.NotifyDataContextChanged(DataContextChangedEventArgs e)
at System.Windows.FrameworkElement.OnAncestorDataContextChanged(DataContextChangedEventArgs e)
at System.Windows.FrameworkElement.NotifyDataContextChanged(DataContextChangedEventArgs e)
at System.Windows.FrameworkElement.OnPropertyChanged(DependencyProperty dp)
at System.Windows.DependencyObject.RaisePropertyChangeNotifications(DependencyProperty dp, Object oldValue, Object newValue)
at System.Windows.DependencyObject.UpdateEffectiveValue(DependencyProperty property, EffectiveValueEntry oldEntry, EffectiveValueEntry& newEntry, ValueOperation operation)
at System.Windows.DependencyObject.SetValueInternal(DependencyProperty dp, Object value, Boolean allowReadOnlySet)
at System.Windows.DependencyObject.SetValueInternal(DependencyProperty dp, Object value)
at System.Windows.DependencyObject.SetValue(DependencyProperty dp, Object value)
at System.Windows.FrameworkElement.set_DataContext(Object value)
at WPUserControls.ViewModel.ItemsTypeViewModel.AddItem(ItemInstance itemInstance)
at WPUserControls.ViewModel.ItemsTypePageViewModel.AddNewItemInstance()
at WPUserControls.Views.ItemsTypePageView.AddItem()
at WPUserControls.Views.ItemsTypePageView.addIcon_Click(Object sender, EventArgs e)
at Microsoft.Phone.Shell.ApplicationBarItemContainer.FireEventHandler(EventHandler handler, Object sender, EventArgs args)
at Microsoft.Phone.Shell.ApplicationBarIconButton.ClickEvent()
at Microsoft.Phone.Shell.ApplicationBarIconButtonContainer.ClickEvent()
at Microsoft.Phone.Shell.ApplicationBar.OnCommand(UInt32 idCommand)
at Microsoft.Phone.Shell.Interop.NativeCallbackInteropWrapper.OnCommand(UInt32 idCommand)
解决方案
Once I installed the sdk RC, it was fixed! I guess it was an MS bug.
这篇关于wp7芒果中的DataTemplateSelector的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！