| IAggregateFluentExtensionsBucketTResult, TValue, TNewResult Method (IAggregateFluentTResult, ExpressionFuncTResult, TValue, IEnumerableTValue, ExpressionFuncIGroupingTValue, TResult, TNewResult, AggregateBucketOptionsTValue) | 
 
            Appends a $bucket stage to the pipeline.
            
 
    Namespace: 
   MongoDB.Driver
    Assembly:
   MongoDB.Driver (in MongoDB.Driver.dll) Version: 2.12.2+a4a3888f4fb51bb518b1eb5002effc2d47f2ea6a
 Syntax
Syntaxpublic static IAggregateFluent<TNewResult> Bucket<TResult, TValue, TNewResult>(
	this IAggregateFluent<TResult> aggregate,
	Expression<Func<TResult, TValue>> groupBy,
	IEnumerable<TValue> boundaries,
	Expression<Func<IGrouping<TValue, TResult>, TNewResult>> output,
	AggregateBucketOptions<TValue> options = null
)
<ExtensionAttribute>
Public Shared Function Bucket(Of TResult, TValue, TNewResult) ( 
	aggregate As IAggregateFluent(Of TResult),
	groupBy As Expression(Of Func(Of TResult, TValue)),
	boundaries As IEnumerable(Of TValue),
	output As Expression(Of Func(Of IGrouping(Of TValue, TResult), TNewResult)),
	Optional options As AggregateBucketOptions(Of TValue) = Nothing
) As IAggregateFluent(Of TNewResult)
[<ExtensionAttribute>]
static member Bucket : 
        aggregate : IAggregateFluent<'TResult> * 
        groupBy : Expression<Func<'TResult, 'TValue>> * 
        boundaries : IEnumerable<'TValue> * 
        output : Expression<Func<IGrouping<'TValue, 'TResult>, 'TNewResult>> * 
        ?options : AggregateBucketOptions<'TValue> 
(* Defaults:
        let _options = defaultArg options null
*)
-> IAggregateFluent<'TNewResult> 
Parameters
- aggregate
- Type: MongoDB.DriverIAggregateFluentTResult
 The aggregate.
- groupBy
- Type: System.Linq.ExpressionsExpressionFuncTResult, TValue
 The expression providing the value to group by.
- boundaries
- Type: System.Collections.GenericIEnumerableTValue
 The bucket boundaries.
- output
- Type: System.Linq.ExpressionsExpressionFuncIGroupingTValue, TResult, TNewResult
 The output projection.
- options (Optional)
- Type: MongoDB.DriverAggregateBucketOptionsTValue
 The options.
Type Parameters
- TResult
- The type of the result.
- TValue
- The type of the value.
- TNewResult
- The type of the new result.
Return Value
Type: 
IAggregateFluentTNewResultThe 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