C# 4.0 Unleashed

Creating and Starting Tasks

The Task Parallel Library (TPL) lives in the System.Threading.Tasks namespace, and we’ll assume this namespace to be imported in the code examples that follow. To create a new task, first think about the work you want to run and whether it returns a value. If so, your goal is to create a Task<TResult> instance. Here, the generic parameter is substituted for the return type of the operation. If no data has to be returned, a nongeneric Task object can be created.

Using the Task Constructor

One way to create a new task is by using the Task<TResult> or Task constructor, where you pass in a delegate to the operation that has to be carried out. (Obviously, anonymous method expressions or lambda expressions can be used for ...