IValueConverter.Convert Method
Converts a value.
Namespace: System.Windows.Data
Assembly: PresentationFramework (in PresentationFramework.dll)
Object Convert( Object value, Type targetType, Object parameter, CultureInfo culture )
Parameters
- value
- Type: System.Object
The value produced by the binding source.
- targetType
- Type: System.Type
The type of the binding target property.
- parameter
- Type: System.Object
The converter parameter to use.
- culture
- Type: System.Globalization.CultureInfo
The culture to use in the converter.
Return Value
Type: System.ObjectA converted value. If the method returns null, the valid null value is used.
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.
