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XamlType.LookupIsNullable Method

.NET Framework 4.6 and 4.5

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

Namespace:  System.Xaml
Assembly:  System.Xaml (in System.Xaml.dll)

protected virtual bool LookupIsNullable()

Return Value

Type: System.Boolean
true if this XamlType represents a nullable type; otherwise, false.

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.

.NET Framework

Supported in: 4.6, 4.5, 4

.NET Framework Client Profile

Supported in: 4
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