Click or drag to resize

IFindFluentExtensionsFirstOrDefaultAsyncTDocument, TProjection Method

Get the first result or null.

Namespace:  MongoDB.Driver
Assembly:  MongoDB.Driver (in MongoDB.Driver.dll) Version: 2.10.0+569905ff5e778c38ea19d9d0392496a83e1704ed
Syntax
public static Task<TProjection> FirstOrDefaultAsync<TDocument, TProjection>(
	this IFindFluent<TDocument, TProjection> find,
	CancellationToken cancellationToken = null
)

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 first 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