XAML 转换器 ConvertBack
有没有办法直接从 XAML 访问实现 IValueConverter 的转换器的 ConvertBack 方法？
基本情况如下（关系）：
Route (1)<->(CN) Training (1)<->(CN) Kilometer
DataContext 设置为 Training。从这里我使用 Convert-Method 来访问我的所有公里。我还有一个从 Route 到 IList 的转换器，并且 ConvertBack 会查找 Route 中的 Training 。但我似乎无法从 XAML 访问该方法......
Is there a way to access the ConvertBack-Method of a Converter that implements IValueConverter directly from XAML?
The basic situation is the following (relationsships):
Route (1)<->(CN) Training (1)<->(CN) Kilometer
The DataContext is set to a Training. From here I use the Convert-Method to access all my Kilometers. I also have a Converter from Route to IList<Training> and the ConvertBack would lookup the Route for a Training. But I seem to not be able to access that Method from XAML…
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您通常不会直接调用
Convert或ConvertBack方法。它们仅用于绑定。在将源值分配给绑定目标之前，会调用Convert方法来转换源值。调用ConvertBack将值转换回双向绑定中的源。我不确定你想做什么，但转换器似乎不是你最好的选择......也许你应该提供更多关于你想要实现的目标的细节
You usually don't call the
ConvertorConvertBackmethods directly. They are only used in bindings. TheConvertmethod is called to convert the source value before it is assigned to the binding target. TheConvertBackis called to convert the value back to the source in a two-way binding.I'm not sure what you're trying to do, but it doesn't seem like converters are your best option... perhaps you should give more details about what you want to achieve