IMongoCollectionExtensionsCountTDocument Method (IMongoCollectionTDocument, ExpressionFuncTDocument, Boolean, CountOptions, CancellationToken) |
Note: This API is now obsolete.
Counts the number of documents in the collection.
Namespace:
MongoDB.Driver
Assembly:
MongoDB.Driver (in MongoDB.Driver.dll) Version: 2.19.1+3a2a09dd959482f665ffbb5df2557ec541597af4
Syntax [ObsoleteAttribute("Use CountDocuments or EstimatedDocumentCount instead.")]
public static long Count<TDocument>(
this IMongoCollection<TDocument> collection,
Expression<Func<TDocument, bool>> filter,
CountOptions options = null,
CancellationToken cancellationToken = default
)
<ExtensionAttribute>
<ObsoleteAttribute("Use CountDocuments or EstimatedDocumentCount instead.")>
Public Shared Function Count(Of TDocument) (
collection As IMongoCollection(Of TDocument),
filter As Expression(Of Func(Of TDocument, Boolean)),
Optional options As CountOptions = Nothing,
Optional cancellationToken As CancellationToken = Nothing
) As Long
[<ExtensionAttribute>]
[<ObsoleteAttribute("Use CountDocuments or EstimatedDocumentCount instead.")>]
static member Count :
collection : IMongoCollection<'TDocument> *
filter : Expression<Func<'TDocument, bool>> *
?options : CountOptions *
?cancellationToken : CancellationToken
(* Defaults:
let _options = defaultArg options null
let _cancellationToken = defaultArg cancellationToken new CancellationToken()
*)
-> int64
Parameters
- collection
- Type: MongoDB.DriverIMongoCollectionTDocument
The collection. - filter
- Type: System.Linq.ExpressionsExpressionFuncTDocument, Boolean
The filter. - options (Optional)
- Type: MongoDB.DriverCountOptions
The options. - cancellationToken (Optional)
- Type: System.ThreadingCancellationToken
The cancellation token.
Type Parameters
- TDocument
- The type of the document.
Return Value
Type:
Int64
The number of documents in the collection.
Usage Note
In Visual Basic and C#, you can call this method as an instance method on any object of type
IMongoCollectionTDocument. When you use instance method syntax to call this method, omit the first parameter. For more information, see
Extension Methods (Visual Basic) or
Extension Methods (C# Programming Guide).
See Also