Optional(T) Structure

OptionalT Structure

Represents an optional parameter that might or might not have a value.

Namespace: MongoDB.Driver
Assembly: MongoDB.Driver.Core (in MongoDB.Driver.Core.dll) Version: 2.3.0

Syntax

public struct Optional<T>

Public Structure Optional(Of T)

[<SealedAttribute>]
type Optional<'T> =  struct end

The OptionalT type exposes the following members.

Constructors

	Name	Description
	OptionalT	Initializes a new instance of the OptionalT struct with a value.

Properties

	Name	Description
	HasValue	Gets a value indicating whether the optional parameter has a value.
	Value	Gets the value of the optional parameter.

Methods

	Name	Description
	Equals	Indicates whether this instance and a specified object are equal. (Inherited from ValueType.)
	GetHashCode	Returns the hash code for this instance. (Inherited from ValueType.)
	GetType	Gets the Type of the current instance. (Inherited from Object.)
	Replaces	Returns a value indicating whether this optional parameter contains a value that is not equal to an existing value.
	ToString	Returns the fully qualified type name of this instance. (Inherited from ValueType.)
	WithDefault	Returns either the value of this optional parameter if it has a value, otherwise a default value.

Operators

	Name	Description
	(T to OptionalT)	Performs an implicit conversion from to an OptionalT with a value.

Extension Methods

	Name	Description
	ToBson	Serializes an object to a BSON byte array. (Defined by BsonExtensionMethods.)
	ToBsonDocument	Serializes an object to a BsonDocument. (Defined by BsonExtensionMethods.)
	ToJson	Serializes an object to a JSON string. (Defined by BsonExtensionMethods.)