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PipelineDefinitionBuilder.Project<TInput, TIntermediate> Method (PipelineDefinition<TInput, TIntermediate>, ProjectionDefinition<TIntermediate, BsonDocument>)

Appends a project stage to the pipeline.

Namespace:  MongoDB.Driver
Assembly:  MongoDB.Driver (in MongoDB.Driver.dll) Version: 2.14.0+2b37a1fe1cbdbe1a020b52b77f1197b6d77575e7
Syntax
public static PipelineDefinition<TInput, BsonDocument> Project<TInput, TIntermediate>(
	this PipelineDefinition<TInput, TIntermediate> pipeline,
	ProjectionDefinition<TIntermediate, BsonDocument> projection
)

Parameters

pipeline
Type: MongoDB.Driver.PipelineDefinition<TInput, TIntermediate>
The pipeline.
projection
Type: MongoDB.Driver.ProjectionDefinition<TIntermediate, BsonDocument>
The projection.

Type Parameters

TInput
The type of the input documents.
TIntermediate
The type of the intermediate documents.

Return Value

Type: PipelineDefinition<TInput, BsonDocument>
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 PipelineDefinition<TInput, 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