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Chapter 5: Creating and Building Projects 129
For Each grade In grades
Console.WriteLine(" - " & grade)
Next
Console.ReadKey()
End Sub
End Module
One item to draw your attention to in Listing 5-2 is the using directive (Imports in VB),
specifying that you can use the types in the ClassLibraryDemo namespace without fully
qualifying them. After that, you can see how Listing 5-2 creates instances of Student and
myStudent and calls GetStudentGrades.
TIP
The call to Console.ReadKey in Listing 5-2 causes program execution to stop until the
user presses a key on their keyboard. If Console.ReadKey was not present, the program
would finish the Main method, which would close the application before you had the
chance to see the output.
Next, you’ll want to compile the code to see if the syntax is good and then run the
program to see if it operates properly. The next section explains how compiling and
running works with VS.
Compiling Applications
You’ll find several compilation options on the Build menu. Because there are so many
options, it isn’t always intuitive which option you should use. The options are scoped to
either the current project or the entire solution. The top portion of the menu applies to
the entire solution, and the second section is context-sensitive, applying to the currently
selected project. The following sections describe each set of options, including build,
rebuild, and clean for both projects and solutions.
Building Solutions/Projects
Building typically means that you run the compiler to compile source code files. Sometimes
the build includes more than compilation. For example, if you are writing ASP
.NET
applications, VS will generate code based on the Web controls on the page and then that
generated code will be compiled with normal code. Therefore, the term build is more
accurate than compile.
During a normal build, VS will only build the items in a project or solution that are out
of date. More specifically, only projects that have changes and edits will be rebuilt,