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MongoCollectionFindOneAs Method (Type, IMongoQuery)
Returns one document in this collection that matches a query as a TDocument.

Namespace: MongoDB.Driver
Assembly: MongoDB.Driver.Legacy (in MongoDB.Driver.Legacy.dll) Version: 2.2.0
Syntax
public virtual Object FindOneAs(
	Type documentType,
	IMongoQuery query
)

Parameters

documentType
Type: SystemType
The type to deserialize the documents as.
query
Type: MongoDB.DriverIMongoQuery
The query (usually a QueryDocument or constructed using the Query builder).

Return Value

Type: Object
A TDocument (or null if not found).
See Also