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: 2.16.0+eeafbea0921243a5868b81984e1083a07c1f75bc
Syntax public 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