Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

C#

Confusion on using namespace in the program.

Why when using the System.Threading.Thread.Sleep(1000); you have to use the System keyword but with Console.WriteLine("Hello"); you don't have to?

I thought the use of using System; allows you to negate the word System

Thank you

1 Answer

Great question Isaac. The reason that you have to use the System.Threading is because it is a different namespace with its own classes and structs.

I'l give you a link to the MS Docs that gives a little bit of an explanation and shows you the different classes available.

https://docs.microsoft.com/en-us/dotnet/api/system?view=netframework-4.8

https://docs.microsoft.com/en-us/dotnet/api/system.threading?view=netframework-4.8