IndexKeysBuilderTDocumentGeoSpatialHaystackTMember Method (ExpressionFuncTDocument, TMember)

Sets the key name to create a geospatial haystack index on.

Namespace: MongoDB.Driver.Builders
Assembly: MongoDB.Driver.Legacy (in MongoDB.Driver.Legacy.dll) Version: 2.10.0+569905ff5e778c38ea19d9d0392496a83e1704ed

Syntax

Copy

public IndexKeysBuilder<TDocument> GeoSpatialHaystack<TMember>(
	Expression<Func<TDocument, TMember>> memberExpression
)

Public Function GeoSpatialHaystack(Of TMember) ( 
	memberExpression As Expression(Of Func(Of TDocument, TMember))
) As IndexKeysBuilder(Of TDocument)

member GeoSpatialHaystack : 
        memberExpression : Expression<Func<'TDocument, 'TMember>> -> IndexKeysBuilder<'TDocument>

Parameters

memberExpression: Type: System.Linq.ExpressionsExpressionFuncTDocument, TMember
The member expression.

Type Parameters

TMember: The type of the member.

Return Value

Type: IndexKeysBuilderTDocument
The builder (so method calls can be chained).

Reference

IndexKeysBuilderTDocument Class

GeoSpatialHaystack Overload

MongoDB.Driver.Builders Namespace