ParallelEnumerable.Sum Method (ParallelQuery<Nullable<Int64>>)
Computes in parallel the sum of a sequence of values.
Assembly: System.Core (in System.Core.dll)
The query was canceled with the token passed in through WithCancellation.
source is a null reference (Nothing in Visual Basic).
The sum is larger than MaxValue. -or- One or more exceptions occurred during the evaluation of the query.
Available since 8
Available since 4.0
Portable Class Library
Supported in: portable .NET platforms
Available since 8.1