IndexKeysTDocumentGeoSpatialHaystackTMember 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: 2.9.0+32b058abcdf2c7e8d9dd3a676d207b31897eee2e

Syntax

Copy

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

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

static 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

IndexKeysTDocument Class

GeoSpatialHaystack Overload

MongoDB.Driver.Builders Namespace