IValueConverter.Convert(Object, Type, Object, CultureInfo) Method
Definition
Important
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Converts a value.
public:
System::Object ^ Convert(System::Object ^ value, Type ^ targetType, System::Object ^ parameter, System::Globalization::CultureInfo ^ culture);public object Convert (object value, Type targetType, object parameter, System.Globalization.CultureInfo culture);abstract member Convert : obj * Type * obj * System.Globalization.CultureInfo -> objPublic Function Convert (value As Object, targetType As Type, parameter As Object, culture As CultureInfo) As ObjectParameters
- value
- Object
The value produced by the binding source.
- targetType
- Type
The type of the binding target property.
- parameter
- Object
The converter parameter to use.
- culture
- CultureInfo
The culture to use in the converter.
Returns
A converted value. If the method returns null, the valid null value is used.
Remarks
The data binding engine calls this method when it propagates a value from the binding source to the binding target.
The data binding engine does not catch exceptions that are thrown by a user-supplied converter. Any exception that is thrown by the Convert method, or any uncaught exceptions that are thrown by methods that the Convert method calls, are treated as run-time errors. Handle anticipated problems by returning DependencyProperty.UnsetValue.
A return value of DependencyProperty.UnsetValue indicates that the converter produced no value and that the binding uses the FallbackValue, if available, or the default value instead.
A return value of Binding.DoNothing indicates that the binding does not transfer the value or use the FallbackValue or default value.
