Method EstimatedDocumentCount

Namespace

MongoDB.Driver

Assembly

MongoDB.Driver.dll

EstimatedDocumentCount(EstimatedDocumentCountOptions, CancellationToken)

Returns an estimate of the number of documents in the collection.

long EstimatedDocumentCount(EstimatedDocumentCountOptions options = null, CancellationToken cancellationToken = default)

Parameters

options EstimatedDocumentCountOptions

The options.

cancellationToken CancellationToken

The cancellation token.

Returns

long

An estimate of the number of documents in the collection.

Remarks

Due to an oversight in versions 5.0.0-5.0.8 of MongoDB, the count command, which estimatedDocumentCount uses in its implementation, was not included in v1 of the Stable API. If you are using the Stable API with estimatedDocumentCount, you must upgrade to server version 5.0.9+ or set strict: false when configuring ServerApi to avoid encountering errors.