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PipelineDefinitionBuilderUnwindTInput, TIntermediate Method (PipelineDefinitionTInput, TIntermediate, ExpressionFuncTIntermediate, Object, AggregateUnwindOptionsBsonDocument)

Appends an unwind stage to the pipeline.

Namespace:  MongoDB.Driver
Assembly:  MongoDB.Driver (in MongoDB.Driver.dll) Version: 2.10.0+569905ff5e778c38ea19d9d0392496a83e1704ed
public static PipelineDefinition<TInput, BsonDocument> Unwind<TInput, TIntermediate>(
	this PipelineDefinition<TInput, TIntermediate> pipeline,
	Expression<Func<TIntermediate, Object>> field,
	AggregateUnwindOptions<BsonDocument> options = null


Type: MongoDB.DriverPipelineDefinitionTInput, TIntermediate
The pipeline.
Type: System.Linq.ExpressionsExpressionFuncTIntermediate, Object
The field to unwind.
options (Optional)
Type: MongoDB.DriverAggregateUnwindOptionsBsonDocument
The options.

Type Parameters

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

Return Value

Type: PipelineDefinitionTInput, 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 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