Click or drag to resize
FilterDefinitionBuilderTDocumentExists Method (ExpressionFuncTDocument, Object, Boolean)
Creates an exists filter.

Namespace: MongoDB.Driver
Assembly: MongoDB.Driver (in MongoDB.Driver.dll) Version: 2.0.1
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