| PipelineDefinitionBuilderUnwindTInput, TIntermediate, TOutput Method (PipelineDefinitionTInput, TIntermediate, FieldDefinitionTIntermediate, AggregateUnwindOptionsTOutput) | 
 
            Appends an $unwind stage to the pipeline.
            
 
    Namespace: 
   MongoDB.Driver
    Assembly:
   MongoDB.Driver (in MongoDB.Driver.dll) Version: 2.12.2+a4a3888f4fb51bb518b1eb5002effc2d47f2ea6a
 Syntax
Syntaxpublic static PipelineDefinition<TInput, TOutput> Unwind<TInput, TIntermediate, TOutput>(
	this PipelineDefinition<TInput, TIntermediate> pipeline,
	FieldDefinition<TIntermediate> field,
	AggregateUnwindOptions<TOutput> options = null
)
<ExtensionAttribute>
Public Shared Function Unwind(Of TInput, TIntermediate, TOutput) ( 
	pipeline As PipelineDefinition(Of TInput, TIntermediate),
	field As FieldDefinition(Of TIntermediate),
	Optional options As AggregateUnwindOptions(Of TOutput) = Nothing
) As PipelineDefinition(Of TInput, TOutput)
[<ExtensionAttribute>]
static member Unwind : 
        pipeline : PipelineDefinition<'TInput, 'TIntermediate> * 
        field : FieldDefinition<'TIntermediate> * 
        ?options : AggregateUnwindOptions<'TOutput> 
(* Defaults:
        let _options = defaultArg options null
*)
-> PipelineDefinition<'TInput, 'TOutput> 
Parameters
- pipeline
- Type: MongoDB.DriverPipelineDefinitionTInput, TIntermediate
 The pipeline.
- field
- Type: MongoDB.DriverFieldDefinitionTIntermediate
 The field.
- options (Optional)
- Type: MongoDB.DriverAggregateUnwindOptionsTOutput
 The options.
Type Parameters
- TInput
- The type of the input documents.
- TIntermediate
- The type of the intermediate documents.
- 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
See Also