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FilterDefinitionBuilderTDocumentOfTypeTField, TDerived Method (ExpressionFuncTDocument, TField, ExpressionFuncTDerived, Boolean)

Creates an OfType filter that matches documents with a field of a derived type and that also match a filter on the derived field.

Namespace:  MongoDB.Driver
Assembly:  MongoDB.Driver (in MongoDB.Driver.dll) Version: 2.17.0+b316340e6cc3a8bfc8638dc31b54fbbfe41bfcb2
Syntax
public FilterDefinition<TDocument> OfType<TField, TDerived>(
	Expression<Func<TDocument, TField>> field,
	Expression<Func<TDerived, bool>> derivedFieldFilter
)
where TDerived : TField

Parameters

field
Type: System.Linq.ExpressionsExpressionFuncTDocument, TField
The field.
derivedFieldFilter
Type: System.Linq.ExpressionsExpressionFuncTDerived, Boolean
A filter on the derived field.

Type Parameters

TField
The type of the field.
TDerived
The type of the matching derived field value.

Return Value

Type: FilterDefinitionTDocument
An OfType filter.
See Also