XAML'NOT'運算符？

Question

<Button IsEnabled="{Binding (Not IsDisabled)}" /> 

有沒有辦法用純XAML做到這一點，否則我將不得不通過代碼來做到這一點？ PS。我問的問題，知道我可以創建一個布爾值轉換器是這樣的：

<ValueConversion(GetType(Boolean), GetType(Boolean))> 
Public Class BooleanFlagSwitchConverter : Implements IValueConverter 

    Public Function Convert(value As Object, targetType As Type, 
      parameter As Object, culture As CultureInfo) As Object 
      Implements IValueConverter.Convert 
     Return Not value 
    End Function 

    Public Function ConvertBack(value As Object, targetType As Type, 
      parameter As Object, ByVal culture As CultureInfo) As Object 
      Implements IValueConverter.ConvertBack 
     Return Not value 
    End Function 

End Class 

[ValueConversion(typeof(bool), typeof(bool))] 
public class BooleanFlagSwitchConverter : IValueConverter 
{ 
    public object Convert(object value, Type targetType, object parameter, 
     CultureInfo culture) 
    { 
     return !(bool)value; 
    } 

    public object ConvertBack(object value, Type targetType, object parameter, 
     CultureInfo culture) 
    { 
     return !(bool)value; 
    } 
} 

Answer 1

它不存在。看看properties on the Binding課程。沒有什麼，除了轉換器會做你想做的。

Answer 2

我會建議使用https://quickconverter.codeplex.com/

反轉布爾是如此的簡單： <Button IsEnabled="{qc:Binding '!$P', P={Binding IsDisabled)}" />

可加速通常需要寫一些轉換的時間。