Add Features to Grade Book Application Using C#

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Add Features to Grade Book Application Using C#

In this code lab, you will use the C# programming language to add new features to an existing grade book application.

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Lab Info

Level

Intermediate

Last updated

Sep 02, 2025

Duration

2h 19m

Challenge

Create a New Enum GradeBookType

Add support for multiple types of grade books to the GradeBook application. ### Solution To view the solution, run git diff origin/master..module1-solution in the Terminal, and press Enter to see the next lines of the difference.

You may also browse the files of the solution by stashing your changes with git stash and running git checkout module1-solution to switch branches.
Challenge

Create GetLetterGrade Override

Override RankedGradeBook's GetLetterGrade method to use ranked grading. ### Solution To view the solution, run git diff origin/master..module2-solution in the Terminal, and press Enter to see the next lines of the difference.

You may also browse the files of the solution by stashing your changes with git stash and running git checkout module2-solution to switch branches.
Challenge

Create CalculateStatistics Override

Override the CalculateStatistics and CalculateStudentStatistics methods when called from RankedGradeBook to prevent continuing when there are less than 5 students. ### Solution To view the solution, run git diff origin/master..module3-solution in the Terminal, and press Enter to see the next lines of the difference.

You may also browse the files of the solution by stashing your changes with git stash and running git checkout module3-solution to switch branches.
Challenge

Increase Parts Check to 3

Update the StartingUserInterface class to support multiple types of grade books. ### Solution To view the solution, run git diff origin/master..module4-solution in the Terminal, and press Enter to see the next lines of the difference.

You may also browse the files of the solution by stashing your changes with git stash and running git checkout module4-solution to switch branches.
Challenge

Change BaseGradeBook to be an Abstract Class.

Make BaseGradeBook into an abstract class. ### Solution To view the solution, run git diff origin/master..module5-solution in the Terminal, and press Enter to see the next lines of the difference.

You may also browse the files of the solution by stashing your changes with git stash and running git checkout module5-solution to switch branches.
Challenge

Create IsWeighted Property

Add support for weighted grading to the GradeBook Application. ### Solution To view the solution, run git diff origin/master..module6-solution in the Terminal, and press Enter to see the next lines of the difference.

You may also browse the files of the solution by stashing your changes with git stash and running git checkout module6-solution to switch branches.

About the author

Eric Fisher

Eric is a software developer who is passionate about always learning and improving. When he's not writing code, you'll find him playing computer games, guitar, disc golf, or learning something new.

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