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FilterDefinitionBuilderTDocumentExists Method (ExpressionFuncTDocument, Object, Boolean)

Creates an exists filter.

Namespace:  MongoDB.Driver
Assembly:  MongoDB.Driver (in MongoDB.Driver.dll) Version: 2.17.0+b316340e6cc3a8bfc8638dc31b54fbbfe41bfcb2
Syntax
public FilterDefinition<TDocument> Exists(
	Expression<Func<TDocument, Object>> field,
	bool exists = true
)

Parameters

field
Type: System.Linq.ExpressionsExpressionFuncTDocument, Object
The field.
exists (Optional)
Type: SystemBoolean
if set to true [exists].

Return Value

Type: FilterDefinitionTDocument
An exists filter.
See Also