Click or drag to resize

IAggregateFluentExtensions.BucketAuto<TResult, TValue, TNewResult> Method (IAggregateFluent<TResult>, Expression<Func<TResult, TValue>>, Int32, Expression<Func<IGrouping<AggregateBucketAutoResultId<TValue>, TResult>, TNewResult>>, AggregateBucketAutoOptions)

Appends a $bucketAuto stage to the pipeline (this overload can only be used with LINQ3).

Namespace:  MongoDB.Driver
Assembly:  MongoDB.Driver (in MongoDB.Driver.dll) Version: 2.20.0+ee01960089f28ea1b501690df5fc9f6318a70242
Syntax
public static IAggregateFluent<TNewResult> BucketAuto<TResult, TValue, TNewResult>(
	this IAggregateFluent<TResult> aggregate,
	Expression<Func<TResult, TValue>> groupBy,
	int buckets,
	Expression<Func<IGrouping<AggregateBucketAutoResultId<TValue>, TResult>, TNewResult>> output,
	AggregateBucketAutoOptions options = null
)

Parameters

aggregate
Type: MongoDB.Driver.IAggregateFluent<TResult>
The aggregate.
groupBy
Type: System.Linq.Expressions.Expression<Func<TResult, TValue>>
The expression providing the value to group by.
buckets
Type: System.Int32
The number of buckets.
output
Type: System.Linq.Expressions.Expression<Func<IGrouping<AggregateBucketAutoResultId<TValue>, TResult>, TNewResult>>
The output projection.
options (Optional)
Type: MongoDB.Driver.AggregateBucketAutoOptions
The options (optional).

Type Parameters

TResult
The type of the result.
TValue
The type of the value.
TNewResult
The type of the new result.

Return Value

Type: IAggregateFluent<TNewResult>
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 IAggregateFluent<TResult>. 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