NotNullWhenAttribute Class

Definition

Namespace:

System.Diagnostics.CodeAnalysis

Assembly:

System.Runtime.dll

Source:

NullableAttributes.cs

Specifies that when a method returns ReturnValue, the parameter will not be null even if the corresponding type allows it.

public ref class NotNullWhenAttribute sealed : Attribute

[System.AttributeUsage(System.AttributeTargets.Parameter, Inherited=false)]
public sealed class NotNullWhenAttribute : Attribute

[<System.AttributeUsage(System.AttributeTargets.Parameter, Inherited=false)>]
type NotNullWhenAttribute = class
    inherit Attribute

Public NotInheritable Class NotNullWhenAttribute
Inherits Attribute

Inheritance

Object

Attribute

NotNullWhenAttribute

Attributes

AttributeUsageAttribute

Remarks

For more information, see Nullable static analysis in the C# guide.

Constructors

NotNullWhenAttribute(Boolean)

Initializes the attribute with the specified return value condition.

Properties

ReturnValue	Gets the return value condition.
TypeId	When implemented in a derived class, gets a unique identifier for this Attribute. (Inherited from Attribute)

Methods

Equals(Object)	Returns a value that indicates whether this instance is equal to a specified object. (Inherited from Attribute)
GetHashCode()	Returns the hash code for this instance. (Inherited from Attribute)
GetType()	Gets the Type of the current instance. (Inherited from Object)
IsDefaultAttribute()	When overridden in a derived class, indicates whether the value of this instance is the default value for the derived class. (Inherited from Attribute)
Match(Object)	When overridden in a derived class, returns a value that indicates whether this instance equals a specified object. (Inherited from Attribute)
MemberwiseClone()	Creates a shallow copy of the current Object. (Inherited from Object)
ToString()	Returns a string that represents the current object. (Inherited from Object)

See also

• Nullable static analysis