XamlType.LookupIsNullable Method

Definition

Namespace:

System.Xaml

Assembly:

System.Xaml.dll

Returns a value that indicates whether this XamlType represents a nullable type, as per the XAML definition.

protected:
 virtual bool LookupIsNullable();

protected virtual bool LookupIsNullable ();

abstract member LookupIsNullable : unit -> bool
override this.LookupIsNullable : unit -> bool

Protected Overridable Function LookupIsNullable () As Boolean

Returns

Boolean

true if this XamlType represents a nullable type; otherwise, false.

Remarks

This method can be invoked by calls to IsNullable.

The default implementation makes a determination based on the CLR core library nullable concept, checked against UnderlyingType. For a null UnderlyingType, it returns true.

Override this method if you want IsNullable to use different logic.