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IFindFluentExtensionsSingleOrDefaultAsyncTDocument, TProjection Method

Gets a single result or null.

Namespace:  MongoDB.Driver
Assembly:  MongoDB.Driver (in MongoDB.Driver.dll) Version: 2.14.0+2b37a1fe1cbdbe1a020b52b77f1197b6d77575e7
Syntax
public static Task<TProjection> SingleOrDefaultAsync<TDocument, TProjection>(
	this IFindFluent<TDocument, TProjection> find,
	CancellationToken cancellationToken = default
)

Parameters

find
Type: MongoDB.DriverIFindFluentTDocument, TProjection
The fluent find.
cancellationToken (Optional)
Type: System.ThreadingCancellationToken
The cancellation token.

Type Parameters

TDocument
The type of the document.
TProjection
The type of the projection (same as TDocument if there is no projection).

Return Value

Type: TaskTProjection
A Task whose result is the single result or null.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type IFindFluentTDocument, TProjection. When you use instance method syntax to call this method, omit the first parameter. For more information, see Extension Methods (Visual Basic) or Extension Methods (C# Programming Guide).
See Also