问题描述
我想跟随的,但我不断收到此异常
I'm trying to follow this little tutorial, but I keep getting this exception.
有关XAML看起来像这样:
The relevant XAML looks like this:
<StatusBar Margin="0,288,0,0" Name="statusBar" Height="23" VerticalAlignment="Bottom">
<StatusBar.DataContext>
<m:MainWindow />
</StatusBar.DataContext>
<TextBlock Name="statusText" Text="{Binding Path=StatusBarText, NotifyOnTargetUpdated=True}" DataContext="{Binding}">
<TextBlock.Triggers>
<EventTrigger RoutedEvent="Binding.TargetUpdated">
<BeginStoryboard>
<Storyboard>
<DoubleAnimationUsingKeyFrames Storyboard.TargetProperty="Opacity">
<EasingDoubleKeyFrame KeyTime="0" Value="0"/>
<EasingDoubleKeyFrame KeyTime="0:0:0.25" Value="1"/>
<EasingDoubleKeyFrame KeyTime="0:0:4" Value="1"/>
<EasingDoubleKeyFrame KeyTime="0:0:5" Value="0"/>
</DoubleAnimationUsingKeyFrames>
</Storyboard>
</BeginStoryboard>
</EventTrigger>
</TextBlock.Triggers>
</TextBlock>
</StatusBar>
我猜我发现了 StackOverflowException
因为我尝试使用主窗口
为的DataContext
。我想使用主窗口
,因为它好像把我的 StatusBarText
属性合乎逻辑的地方,
I'm guessing I'm getting the StackOverflowException
because I'm trying to use MainWindow
as the DataContext
. I want to use the MainWindow
because it seems like a logical place to put my StatusBarText
property,
public partial class MainWindow : Window
{
public string StatusBarText { get; set; }
这使得它更容易访问我的代码隐藏事件处理程序。
It makes it easier to access in my code-behind event handlers.
那我该怎么办呢?我应该在哪里把这个属性?还是有方法来设置的DataContext为本,这样它不创建主窗口的新实例,只是提到自己?
What am I supposed to do then? Where am I supposed to put this property? Or is there a way to set the DataContext to "this" so that it doesn't create a new instance of MainWindow and just refers to itself?
推荐答案
我一般设置我的代码隐藏的DataContext,在构造函数(我通常使用MVVM,但应用于小型临时项目窗口):
I generally set my DataContext in code-behind, in the constructor (I usually use MVVM, but have used a window in small temp projects):
public MainWindow()
{
statusBar.DataContext = this;
}
请注意,在你所示的代码示例,你只会得到您的初始StatusBarText值因为你没有实现INotifyPropertyChanged的。
Note that in your shown code example, you will only get your initial StatusBarText value, because you are not implementing INotifyPropertyChanged.
这篇关于StackOverflowException上的InitializeComponent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!