Question

What are C# classes for SelectionKey, SelectableChannel and Selector in Java? Are there any direct translations of those classes or what are the next best things?

Edit:
As Marc Gravell pointed out, it’s for a multiplexer for IO operations (network).

Answer 1

There aren’t any classes directly corresponding to the java.nio model in .NET. Asynchronous IO is typically performed using a BeginRead/EndRead (etc) approach. There’s also the event-based asynchonous model used by classes like WebClient. Additionally in .NET 4 with the Task Parallel Library you can use task-based asynchrony, which can also take advantage of the Begin/End pattern.

You can read more about asynchronous IO in .NET in MSDN.

Note that C# 5 will introduce asynchronous methods, which will make a lot of this easier.