Note
The TPL Dataflow Library (the xref:System.Threading.Tasks.Dataflow namespace) is not distributed with .NET. To install the xref:System.Threading.Tasks.Dataflow namespace in Visual Studio, open your project, choose Manage NuGet Packages from the Project menu, and search online for the System.Threading.Tasks.Dataflow package. Alternatively, to install it using the .NET Core CLI, run dotnet add package System.Threading.Tasks.Dataflow.