你好，
根据你的描述，我做了一个简单的测试，并没有重现你的问题，以下是demo的代码：
public class ViewModel : INotifyPropertyChanged
{
Dictionary<string, string> pairs = new Dictionary<string, string>();
public Dictionary<string, string> Pairs
{
get { return pairs; }
set
{
pairs = value;
NotifyPropertyChanged("Pairs");
}
}
public ViewModel()
{
Pairs.Add("UserControl1", "MyUserCtrs\\UserControl1.xaml");
Pairs.Add("UserControl2", "MyUserCtrs\\UserControl2.xaml");
Pairs.Add("UserControl3", "MyUserCtrs\\UserControl3.xaml");
}
public event PropertyChangedEventHandler PropertyChanged;
public void NotifyPropertyChanged(string propertyName)
{
if (PropertyChanged != null)
{
PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
}
}
}
MainWindow页面代码是：
<Window.DataContext>
<local:ViewModel></local:ViewModel>
</Window.DataContext>
<ContentControl>
<TabControl ItemsSource="{Binding Pairs}">
<TabControl.ItemTemplate>
<DataTemplate>
<TextBlock Text="{Binding Key}"/>
</DataTemplate>
</TabControl.ItemTemplate>
<TabControl.ContentTemplate>
<DataTemplate >
<Frame Source="{Binding Value}"></Frame>
</DataTemplate>
</TabControl.ContentTemplate>
</TabControl>
</ContentControl>
请查看一下，是否与你的代码类似，如果完全不同，你可以提供你的sample供我测试分析吗?
谢谢
Daisy Tian
MSDN Community Support
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