NotNullWhenAttribute Class

Definition

Namespace:: System.Diagnostics.CodeAnalysis

Assemblies:: netstandard.dll, System.Runtime.dll

Assembly:: System.Runtime.dll

Assembly:: netstandard.dll

Source:: NullableAttributes.cs

Source:: NullableAttributes.cs

Source:: NullableAttributes.cs

Source:: NullableAttributes.cs

Important

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Specifies that when a method returnsReturnValue, the parameter will not benull 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 NotNullWhenAttributeInherits Attribute

Inheritance: Object
Attribute
NotNullWhenAttribute

Attributes: AttributeUsageAttribute

Remarks

For more information, seeNullable 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 thisAttribute. (Inherited fromAttribute)

Methods

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

Applies to

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