Converts source values to a value for the binding target. The data binding engine calls this method when it propagates the values from source bindings to the binding target.
Type: SystemObject The array of values that the source bindings in the MultiBinding produces. The value UnsetValue indicates that the source binding has no value to provide for conversion.
targetType
Type: SystemType The type of the binding target property.
parameter
Type: SystemObject The converter parameter to use.