Task.Run() or Task.Factory.StartNew(): When Should I Use Which?

Comparison of Task.Run() and Task.Factory.StartNew()

Want to execute a method in a new task? There are two options: Task.Run() and Task.Factory.StartNew(). But what is the difference between the two methods?

While both use the thread pool and start the specified method immediately, they differ in their custom functionality.

Task.Run()

Task.Run() appeared in .NET 4.5 and is a simple and efficient way to start a task. Its limited parameters make it a suitable choice for basic scenarios.

Task.Factory.StartNew()

Task.Factory.StartNew() is available in older .NET versions and provides greater flexibility and control. It allows you to:

• Specify thread creation options (e.g., use LongRunning for tasks that require dedicated threads)
• Set task cancellation mark
• Select task scheduler
• Configure additional options related to subtasks and exceptions

When should each method be used?

• Task.Run(): Suitable for simple tasks that don’t require advanced customization.
• Task.Factory.StartNew(): Recommended for tasks with more complex requirements, such as long-running operations or tasks that require access to thread-specific resources.

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