FilterDefinitionBuilderTDocumentExists Method (FieldDefinitionTDocument, Boolean)

Creates an exists filter.

Namespace: MongoDB.Driver
Assembly: MongoDB.Driver (in MongoDB.Driver.dll) Version: 2.15.0+f503bf610759c13f78cff9a3c01e91453185d2ed

Syntax

Copy

public FilterDefinition<TDocument> Exists(
	FieldDefinition<TDocument> field,
	bool exists = true
)

Public Function Exists ( 
	field As FieldDefinition(Of TDocument),
	Optional exists As Boolean = true
) As FilterDefinition(Of TDocument)

member Exists : 
        field : FieldDefinition<'TDocument> * 
        ?exists : bool 
(* Defaults:
        let _exists = defaultArg exists true
*)
-> FilterDefinition<'TDocument>

Parameters

field: Type: MongoDB.DriverFieldDefinitionTDocument
The field.
exists (Optional): Type: SystemBoolean
if set to true [exists].

Return Value

Type: FilterDefinitionTDocument
An exists filter.

Reference

FilterDefinitionBuilderTDocument Class

Exists Overload

MongoDB.Driver Namespace