Silverlight 4 TabControl MVVM选项卡标题绑定
在 silverlight 应用程序中，我在代码中动态创建选项卡项（MainView 的代码隐藏）：
TabItem tab = new TabItem();
CustomerView view = new CustomerView();
view.DataContext = customerViewModel; //or tab.DataContext = customerViewModel;??
tab.Content = view;
DataTemplate template = this.Resources["CustomTabItemHeader"] as DataTemplate;
tab.HeaderTemplate = template;
tabControl.Items.Add(tab);
CustomTabItemHeader （在 MainView.xaml 中）如下所示：
<UserControl.Resources>
<DataTemplate x:Key="CustomTabItemHeader">
<TextBlock Text="{Binding Path=DisplayName}"/>
</DataTemplate>
</UserControl.Resources>
CustomerViewModel 具有 DisplayName 属性，并且它实现 INotifyPropertyChanged 接口。但 DisplayName 不会显示在选项卡标题中。有人可以解释一下为什么吗？
In silverlight app I create tab items dynamically in code (MainView's code-behind):
TabItem tab = new TabItem();
CustomerView view = new CustomerView();
view.DataContext = customerViewModel; //or tab.DataContext = customerViewModel;??
tab.Content = view;
DataTemplate template = this.Resources["CustomTabItemHeader"] as DataTemplate;
tab.HeaderTemplate = template;
tabControl.Items.Add(tab);
CustomTabItemHeader (in MainView.xaml) looks like:
<UserControl.Resources>
<DataTemplate x:Key="CustomTabItemHeader">
<TextBlock Text="{Binding Path=DisplayName}"/>
</DataTemplate>
</UserControl.Resources>
CustomerViewModel has DisplayName property and it implements INotifyPropertyChanged interface. But DisplayName isn't displayed in the tab header. Can someone explain me why?
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我愚蠢地假设 TabItem 标头模板中的文本块会查看选项卡的数据上下文以获得其文本值，但事实并非如此。所以我必须执行以下操作：
I foolishly assumed that textblock in the TabItem header template would look into tab's datacontext in order to get its text value, which was not the case. So I had to do the following: