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MongoQueryableSumAsync Method (IMongoQueryableNullableInt64, CancellationToken)

Namespace:  MongoDB.Driver.Linq
Assembly:  MongoDB.Driver (in MongoDB.Driver.dll) Version: 2.12.2+a4a3888f4fb51bb518b1eb5002effc2d47f2ea6a
Syntax
public static Task<Nullable<long>> SumAsync(
	this IMongoQueryable<Nullable<long>> source,
	CancellationToken cancellationToken = null
)

Parameters

source
Type: MongoDB.Driver.LinqIMongoQueryableNullableInt64
A sequence of values to calculate the sum of.
cancellationToken (Optional)
Type: System.ThreadingCancellationToken
The cancellation token.

Return Value

Type: TaskNullableInt64
The sum of the values in the sequence.

Usage Note

In Visual Basic and C#, you can call this method as an instance method on any object of type IMongoQueryableNullableInt64. 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