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The Solution
4:52In this video, we'll explain the solution to the challenge.
Welcome back, how did you do?
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Don't worry if you ran into any issues,
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it's completely natural to struggle
when you're learning something new.
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Let's walk through how I
completed the session.
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To create the new C# workspace
I clicked on Workspaces in
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the main menu of the Treehouse website.
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Then here in the top left corner of
the list of existing Workspaces,
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I click the New link.
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In the New Workspace dialogue,
I enter the title C# practice session.
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Selected C# for the environment.
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And clicked Create Workspace.
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Once the workspace finished loading,
in the new window I selected the File,
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New File menu item to add a new file.
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And entered Program.cs for the file name.
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I then went and grabbed a copy of
the code from the teacher's notes for
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the first video.
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To do that I used the mouse to select
the code, and pressed Ctrl+ C, or
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Cmd+C on the Mac to copy
the code to the clipboard.
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I then use the mouse to click into
the Program.cs file, and pressed Ctrl+ V,
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or Cmd+ V on the Mac,
to paste the code from the clipboard.
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Don't forget to save the file at this
point, you can do that by pressing
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Ctrl+ S, or Cmd+ S on the Mac, or
select the File, Save menu item.
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Just as a quick review,
our class is program, and
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it's contains a single method named Main.
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Remember that C# looks for a method
named main when the program is ran.
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The Main method contains a single line
of code, which will write the text,
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I love learning C# at Treehouse,
to the console when we run the program.
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Speaking of which,
let's compile and run our program.
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To start you need to make sure that the
console is visible by selecting the View,
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Show Console menu item.
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If the console is currently being
displayed, as it is for me, then you'll
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see the menu item Hide Console,
which allows you to hide the console.
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To compile the program,
I ran the command mcs Program.cs.
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Be sure to capitalize the letter P,
if you don't you'll receive an error from
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the compiler that the file program.cs
with a lower case p can't be found.
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If the program was compiled successfully,
the command will complete but
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you won't see a message.
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You can confirm that the command
worked by running the ls command,
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which will list the contents
of the current folder.
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We can see that our folder contains two
files, Program.cs which is our code file,
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and Program.exe, which is our
program's compiled executable.
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To run the program,
I ran the command, mono Program.exe.
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And here's the message, I love learning
C# at Treehouse written to the console.
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Again, if you're unable to
get the program to run,
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check to make sure you're typing the mono
command in all lower case letters, and
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that Program.exe starts with a capital P,
and ends with .exe.
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Doing any part of that incorrectly
will result in an error.
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Once you've gotten the program to run
once, feel free to change the literal
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string value that is being passed
to the console write line method,
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I love learning C# at Treehouse,
to whatever you'd like.
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Just be sure to recompile the program
before you attempt to run it,
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otherwise you'll still see the previous
message written to the console.
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And that's it.
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Be sure to keep practicing, and
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let us know if you'd like to see
more of these practice sessions.
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See you next time.
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