ZoomPercentageConverter.ConvertBack(Object, Type, Object, CultureInfo) Method
Definition
Important
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public:
virtual System::Object ^ ConvertBack(System::Object ^ value, Type ^ targetType, System::Object ^ parameter, System::Globalization::CultureInfo ^ culture);public object ConvertBack (object value, Type targetType, object parameter, System.Globalization.CultureInfo culture);abstract member ConvertBack : obj * Type * obj * System.Globalization.CultureInfo -> obj
override this.ConvertBack : obj * Type * obj * System.Globalization.CultureInfo -> objPublic Function ConvertBack (value As Object, targetType As Type, parameter As Object, culture As CultureInfo) As ObjectParameters
- parameter
- Object
null.
- culture
- CultureInfo
The language and culture assumed during the conversion.
Returns
UnsetValue when the converter cannot produce a value; for example, when value is not a valid percentage when targetType is not Double or String.
-or-
A Double representing the zoom percentage of a DocumentViewer.
Implements
Remarks
The data binding engine calls this method when it moves a value from the binding target to the binding source.
UnsetValue may be returned to indicate that the converter produced no value and that the fallback (if available) or default value should be used instead.
Pass null for parameter. This parameter is required by the signature of ConvertBack, and is used by some implementations to provide contextual information to the converter; but it is not used in this class.
