C#.NET — prerequisites for using a class (Point) present in namespace Graph stored in a library.

Q: C#.NET — prerequisites for using a class (Point) present in namespace Graph stored in a library.

Fact: Before using a class from an external library, a project must reference that library. Only then can fully qualified names or using directives resolve correctly. Final Answer: Add Reference of the library before using the Point class.

Difficulty: Medium

Use fully qualified name of the Point class.
Use using statement before using the Point class.
Add Reference of the library before using the Point class.
Use using statement before using the Point class.
Copy the library into the current project directory before using the Point class.

Correct Answer: Add Reference of the library before using the Point class.

Explanation:

Fact:
Before using a class from an external library, a project must reference that library. Only then can fully qualified names or using directives resolve correctly.

Final Answer:
Add Reference of the library before using the Point class.

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C#.NET — prerequisites for using a class (Point) present in namespace Graph stored in a library.

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