Group(TResult, TKey, TNewResult) Method (IAggregateFluent(TResult), Expression(Func(TResult, TKey)), Expression(Func(IGrouping(TKey, TResult), TNewResult)))

IAggregateFluentExtensionsGroupTResult Method (IAggregateFluentTResult, ProjectionDefinitionTResult, BsonDocument)

Appends a group stage to the pipeline.

Namespace: MongoDB.Driver
Assembly: MongoDB.Driver (in MongoDB.Driver.dll) Version: 2.8.0+cc573f3e1f48f39162b4b680e921a623e127e8fa

Syntax

Copy

public static IAggregateFluent<BsonDocument> Group<TResult>(
	this IAggregateFluent<TResult> aggregate,
	ProjectionDefinition<TResult, BsonDocument> group
)

<ExtensionAttribute>
Public Shared Function Group(Of TResult) ( 
	aggregate As IAggregateFluent(Of TResult),
	group As ProjectionDefinition(Of TResult, BsonDocument)
) As IAggregateFluent(Of BsonDocument)

[<ExtensionAttribute>]
static member Group : 
        aggregate : IAggregateFluent<'TResult> * 
        group : ProjectionDefinition<'TResult, BsonDocument> -> IAggregateFluent<BsonDocument>

Parameters

aggregate: Type: MongoDB.DriverIAggregateFluentTResult
The aggregate.
group: Type: MongoDB.DriverProjectionDefinitionTResult, BsonDocument
The group projection.

Type Parameters

TResult: The type of the result.

Return Value

Type: IAggregateFluentBsonDocument
The fluent aggregate interface.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type IAggregateFluentTResult. 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).

Reference

IAggregateFluentExtensions Class

Group Overload

MongoDB.Driver Namespace