| IAggregateFluentExtensionsGroupTResult, TKey, TNewResult Method (IAggregateFluentTResult, ExpressionFuncTResult, TKey, ExpressionFuncIGroupingTKey, TResult, TNewResult) | 
 
            Appends a group stage to the pipeline.
            
 
    Namespace: 
   MongoDB.Driver
    Assembly:
   MongoDB.Driver (in MongoDB.Driver.dll) Version: 2.12.2+a4a3888f4fb51bb518b1eb5002effc2d47f2ea6a
 Syntax
Syntaxpublic static IAggregateFluent<TNewResult> Group<TResult, TKey, TNewResult>(
	this IAggregateFluent<TResult> aggregate,
	Expression<Func<TResult, TKey>> id,
	Expression<Func<IGrouping<TKey, TResult>, TNewResult>> group
)
<ExtensionAttribute>
Public Shared Function Group(Of TResult, TKey, TNewResult) ( 
	aggregate As IAggregateFluent(Of TResult),
	id As Expression(Of Func(Of TResult, TKey)),
	group As Expression(Of Func(Of IGrouping(Of TKey, TResult), TNewResult))
) As IAggregateFluent(Of TNewResult)
[<ExtensionAttribute>]
static member Group : 
        aggregate : IAggregateFluent<'TResult> * 
        id : Expression<Func<'TResult, 'TKey>> * 
        group : Expression<Func<IGrouping<'TKey, 'TResult>, 'TNewResult>> -> IAggregateFluent<'TNewResult> 
Parameters
- aggregate
- Type: MongoDB.DriverIAggregateFluentTResult
 The aggregate.
- id
- Type: System.Linq.ExpressionsExpressionFuncTResult, TKey
 The id.
- group
- Type: System.Linq.ExpressionsExpressionFuncIGroupingTKey, TResult, TNewResult
 The group projection.
Type Parameters
- TResult
- The type of the result.
- TKey
- The type of the key.
- TNewResult
- The type of the new result.
Return Value
Type: 
IAggregateFluentTNewResult
            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).
 See Also
See Also