Class MongoClient.Collection<TDocument>

An object representing a remote MongoDB collection.

Inheritance

object

MongoClient.Collection<TDocument>

Namespace: Realms.Sync

Assembly: Realm.dll

Syntax

public class MongoClient.Collection<TDocument> where TDocument : class

Type Parameters

Name	Description
TDocument	The managed type that matches the shape of the documents in the collection.

Properties

Database

Gets the Database this collection belongs to.

Declaration

public MongoClient.Database? Database { get; }

Property Value

Type	Description
MongoClient.Database	The collection's Database or null if the database was automatically inferred with MongoClient.Collection<TDocument>.

Name

Gets the name of the collection.

Declaration

public string Name { get; }

Property Value

Type	Description
string	The collection name.

Methods

AggregateAsync(params object[])

Executes an aggregation pipeline on the collection and returns the results as a MongoDB.Bson.BsonDocument array.

Declaration

public Task<BsonDocument[]> AggregateAsync(params object[] pipeline)

Parameters

Type	Name	Description
object[]	pipeline	Documents describing the different pipeline stages using pipeline expressions.

Returns

Type	Description
Task<BsonDocument[]>	An awaitable Task representing the remote aggregate operation. The result of the task is an array containing the documents returned by executing the aggregation pipeline.

See Also

https://mongodb.prakticum-team.ru/proxy/docs.mongodb.com/manual/aggregation/

AggregateAsync<TProjection>(params object[])

Executes an aggregation pipeline on the collection and returns the results as a TProjection array.

Declaration

public Task<TProjection[]> AggregateAsync<TProjection>(params object[] pipeline)

Parameters

Type	Name	Description
object[]	pipeline	Documents describing the different pipeline stages using pipeline expressions.

Returns

Type	Description
Task<TProjection[]>	An awaitable Task representing the remote aggregate operation. The result of the task is an array containing the documents returned by executing the aggregation pipeline.

Type Parameters

Name	Description
TProjection	The managed type that matches the shape of the result of the pipeline.

See Also

https://mongodb.prakticum-team.ru/proxy/docs.mongodb.com/manual/aggregation/

CountAsync(object?, long?)

Counts the number of documents in the collection that match the provided filter.

Declaration

public Task<long> CountAsync(object? filter = null, long? limit = null)

Parameters

Type	Name	Description
object	filter	A document describing the find criteria using query operators. If not specified, all documents in the collection will be counted.
long?	limit	The maximum number of documents to count. If not specified, all documents in the collection are counted.

Returns

Type	Description
Task<long>	An awaitable Task representing the remote count operation. The result of the task is the number of documents that match the filter and limit criteria.

DeleteManyAsync(object?)

Removes one or more documents from a collection. If no documents match the filter, the collection is not modified.

Declaration

public Task<MongoClient.DeleteResult> DeleteManyAsync(object? filter = null)

Parameters

Type	Name	Description
object	filter	A document describing the deletion criteria using query operators. If not specified, all documents in the collection will be deleted.

Returns

Type	Description
Task<MongoClient.DeleteResult>	An awaitable Task<TResult> representing the remote delete many operation. The result of the task contains the number of deleted documents.

See Also

https://mongodb.prakticum-team.ru/proxy/docs.mongodb.com/manual/reference/method/db.collection.deleteMany/

DeleteOneAsync(object?)

Removes a single document from a collection. If no documents match the filter, the collection is not modified.

Declaration

public Task<MongoClient.DeleteResult> DeleteOneAsync(object? filter = null)

Parameters

Type	Name	Description
object	filter	A document describing the deletion criteria using query operators. If not specified, the first document in the collection will be deleted.

Returns

Type	Description
Task<MongoClient.DeleteResult>	An awaitable Task<TResult> representing the remote delete one operation. The result of the task contains the number of deleted documents.

See Also

https://mongodb.prakticum-team.ru/proxy/docs.mongodb.com/manual/reference/method/db.collection.deleteOne/

FindAsync(object?, object?, object?, long?)

Finds the all documents in the collection up to limit.

Declaration

public Task<TDocument[]> FindAsync(object? filter = null, object? sort = null, object? projection = null, long? limit = null)

Parameters

Type	Name	Description
object	filter	A document describing the find criteria using query operators. If not specified, all documents in the collection will be returned.
object	sort	A document describing the sort criteria. If not specified, the order of the returned documents is not guaranteed.
object	projection	A document describing the fields to return for all matching documents. If not specified, all fields are returned.
long?	limit	The maximum number of documents to return. If not specified, all documents in the collection are returned.

Returns

Type	Description
Task<TDocument[]>	An awaitable Task representing the remote find operation. The result of the task is an array containing the documents that match the find criteria.

See Also

https://mongodb.prakticum-team.ru/proxy/docs.mongodb.com/manual/reference/method/db.collection.find/

FindOneAndDeleteAsync(object?, object?, object?)

Finds the first document in the collection that satisfies the query criteria.

Declaration

public Task<TDocument?> FindOneAndDeleteAsync(object? filter = null, object? sort = null, object? projection = null)

Parameters

Type	Name	Description
object	filter	A document describing the find criteria using query operators. If not specified, all documents in the collection will match the request.
object	sort	A document describing the sort criteria. If not specified, the order of the returned documents is not guaranteed.
object	projection	A document describing the fields to return for all matching documents. If not specified, all fields are returned.

Returns

Type	Description
Task<TDocument>	An awaitable Task<TResult> representing the remote find one operation. The result of the task is the first document that matches the find criteria.

See Also

https://mongodb.prakticum-team.ru/proxy/docs.mongodb.com/manual/reference/method/db.collection.findOneAndDelete/

FindOneAndReplaceAsync(object?, TDocument, object?, object?, bool, bool)

Finds the first document in the collection that satisfies the query criteria.

Declaration

public Task<TDocument> FindOneAndReplaceAsync(object? filter, TDocument replacementDoc, object? sort = null, object? projection = null, bool upsert = false, bool returnNewDocument = false)

Parameters

Type	Name	Description
object	filter	A document describing the find criteria using query operators. If not specified, all documents in the collection will match the request.
TDocument	replacementDoc	The replacement document. Cannot contain update operator expressions.
object	sort	A document describing the sort criteria. If not specified, the order of the returned documents is not guaranteed.
object	projection	A document describing the fields to return for all matching documents. If not specified, all fields are returned.
bool	upsert	A boolean controlling whether the replace should insert a document if no documents match the filter. Defaults to false. MongoDB will add the _id field to the replacement document if it is not specified in either the filter or replacement documents. If _id is present in both, the values must be equal.
bool	returnNewDocument	A boolean controlling whether to return the replacement document. If set to false the original document before the update is returned. Defaults to false.

Returns

Type	Description
Task<TDocument>	An awaitable Task<TResult> representing the remote find one operation. The result of the task is the first document that matches the find criteria.

See Also

https://mongodb.prakticum-team.ru/proxy/docs.mongodb.com/manual/reference/method/db.collection.findOneAndReplace/

FindOneAndUpdateAsync(object?, object, object?, object?, bool, bool)

Finds the first document in the collection that satisfies the query criteria.

Declaration

public Task<TDocument> FindOneAndUpdateAsync(object? filter, object updateDocument, object? sort = null, object? projection = null, bool upsert = false, bool returnNewDocument = false)

Parameters

Type	Name	Description
object	filter	A document describing the find criteria using query operators. If not specified, all documents in the collection will match the request.
object	updateDocument	A document describing the update. Can only contain update operator expressions.
object	sort	A document describing the sort criteria. If not specified, the order of the returned documents is not guaranteed.
object	projection	A document describing the fields to return for all matching documents. If not specified, all fields are returned.
bool	upsert	A boolean controlling whether the update should insert a document if no documents match the filter. Defaults to false.
bool	returnNewDocument	A boolean controlling whether to return the new updated document. If set to false the original document before the update is returned. Defaults to false.

Returns

Type	Description
Task<TDocument>	An awaitable Task<TResult> representing the remote find one operation. The result of the task is the first document that matches the find criteria.

See Also

https://mongodb.prakticum-team.ru/proxy/docs.mongodb.com/manual/reference/method/db.collection.findOneAndUpdate/

FindOneAsync(object?, object?, object?)

Finds the first document in the collection that satisfies the query criteria.

Declaration

public Task<TDocument?> FindOneAsync(object? filter = null, object? sort = null, object? projection = null)

Parameters

Type	Name	Description
object	filter	A document describing the find criteria using query operators. If not specified, all documents in the collection will match the request.
object	sort	A document describing the sort criteria. If not specified, the order of the returned documents is not guaranteed.
object	projection	A document describing the fields to return for all matching documents. If not specified, all fields are returned.

Returns

Type	Description
Task<TDocument>	An awaitable Task<TResult> representing the remote find one operation. The result of the task is the first document that matches the find criteria.

See Also

https://mongodb.prakticum-team.ru/proxy/docs.mongodb.com/manual/reference/method/db.collection.findOne/

InsertManyAsync(IEnumerable<TDocument>)

Inserts one or more documents in the collection.

Declaration

public Task<MongoClient.InsertManyResult> InsertManyAsync(IEnumerable<TDocument> docs)

Parameters

Type	Name	Description
IEnumerable<TDocument>	docs	The documents to insert.

Returns

Type	Description
Task<MongoClient.InsertManyResult>	An awaitable Task<TResult> representing the remote insert many operation. The result of the task contains the _ids of the inserted documents.

See Also

https://mongodb.prakticum-team.ru/proxy/docs.mongodb.com/manual/reference/method/db.collection.insertMany/

InsertOneAsync(TDocument)

Inserts the provided document in the collection.

Declaration

public Task<MongoClient.InsertResult> InsertOneAsync(TDocument doc)

Parameters

Type	Name	Description
TDocument	doc	The document to insert.

Returns

Type	Description
Task<MongoClient.InsertResult>	An awaitable Task<TResult> representing the remote insert operation. The result of the task contains the _id of the inserted document.

See Also

https://mongodb.prakticum-team.ru/proxy/docs.mongodb.com/manual/reference/method/db.collection.insertOne/

UpdateManyAsync(object?, object, bool)

Updates one or more documents in the collection according to the specified arguments.

Declaration

public Task<MongoClient.UpdateResult> UpdateManyAsync(object? filter, object updateDocument, bool upsert = false)

Parameters

Type	Name	Description
object	filter	A document describing the selection criteria of the update. If not specified, all documents in the collection will be updated. Can only contain query selector expressions.
object	updateDocument	A document describing the update. Can only contain update operator expressions.
bool	upsert	A boolean controlling whether the update should insert a document if no documents match the filter. Defaults to false.

Returns

Type	Description
Task<MongoClient.UpdateResult>	An awaitable Task<TResult> representing the remote update many operation. The result of the task contains information about the number of matched and updated documents, as well as the _id of the upserted document if upsert was set to true and the operation resulted in an upsert.

See Also

https://mongodb.prakticum-team.ru/proxy/docs.mongodb.com/manual/reference/method/db.collection.updateMany/

UpdateOneAsync(object?, object, bool)

Updates a single document in the collection according to the specified arguments.

Declaration

public Task<MongoClient.UpdateResult> UpdateOneAsync(object? filter, object updateDocument, bool upsert = false)

Parameters

Type	Name	Description
object	filter	A document describing the selection criteria of the update. If not specified, the first document in the collection will be updated. Can only contain query selector expressions.
object	updateDocument	A document describing the update. Can only contain update operator expressions.
bool	upsert	A boolean controlling whether the update should insert a document if no documents match the filter. Defaults to false.

Returns

Type	Description
Task<MongoClient.UpdateResult>	An awaitable Task<TResult> representing the remote update one operation. The result of the task contains information about the number of matched and updated documents, as well as the _id of the upserted document if upsert was set to true and the operation resulted in an upsert.

See Also

https://mongodb.prakticum-team.ru/proxy/docs.mongodb.com/manual/reference/method/db.collection.updateOne/