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PipelineDefinitionBuilderBucketAutoTInput, TIntermediate, TValue, TOutput Method (PipelineDefinitionTInput, TIntermediate, AggregateExpressionDefinitionTIntermediate, TValue, Int32, ProjectionDefinitionTIntermediate, TOutput, AggregateBucketAutoOptions)

Appends a $bucketAuto stage to the pipeline.

Namespace:  MongoDB.Driver
Assembly:  MongoDB.Driver (in MongoDB.Driver.dll) Version: 2.20.0+ee01960089f28ea1b501690df5fc9f6318a70242
Syntax
public static PipelineDefinition<TInput, TOutput> BucketAuto<TInput, TIntermediate, TValue, TOutput>(
	this PipelineDefinition<TInput, TIntermediate> pipeline,
	AggregateExpressionDefinition<TIntermediate, TValue> groupBy,
	int buckets,
	ProjectionDefinition<TIntermediate, TOutput> output,
	AggregateBucketAutoOptions options = null
)

Parameters

pipeline
Type: MongoDB.DriverPipelineDefinitionTInput, TIntermediate
The pipeline.
groupBy
Type: MongoDB.DriverAggregateExpressionDefinitionTIntermediate, TValue
The group by expression.
buckets
Type: SystemInt32
The number of buckets.
output
Type: MongoDB.DriverProjectionDefinitionTIntermediate, TOutput
The output projection.
options (Optional)
Type: MongoDB.DriverAggregateBucketAutoOptions
The options.

Type Parameters

TInput
The type of the input documents.
TIntermediate
The type of the intermediate documents.
TValue
The type of the values.
TOutput
The type of the output documents.

Return Value

Type: PipelineDefinitionTInput, TOutput
A new pipeline with an additional stage.

Usage Note

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