Record inheritance in C Sharp (C#) - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is a record in C#?

A record is a special kind of class in C# designed to hold immutable data with built-in value-based equality and concise syntax.

beginner

Can records in C# inherit from other records?

Yes, records can inherit from other records, allowing you to extend data structures while keeping value-based equality.

intermediate

How does inheritance affect equality in C# records?

Derived records include base record properties in their equality checks, so two records are equal if all their properties match, including inherited ones.

beginner

What is the syntax to declare a record that inherits from another record?

Use the colon (:) after the record name followed by the base record name. Example: <br>public record Employee(string Name, int Id) : Person(Name, Id);

intermediate

Can you override properties in derived records?

Yes, you can override virtual properties in derived records to customize behavior while preserving immutability.

What keyword is used to indicate inheritance in C# records?

A :

B extends

C inherits

D implements

In C#, the colon (:) is used to specify inheritance for classes and records.

Which of the following is true about record inheritance in C#?

A Records cannot inherit from other records.

B Records lose immutability when inherited.

C Records must override all base properties.

D Records inherit value-based equality including base properties.

Derived records include base properties in their value-based equality checks.

How do you declare a record named 'Manager' that inherits from 'Employee'?

A record Manager inherits Employee {}

B record Manager : Employee {}

C record Manager extends Employee {}

D record Manager implements Employee {}

The correct syntax uses a colon (:) to indicate inheritance.

Can you add new properties in a derived record?

A Yes, derived records can add new properties.

B No, derived records cannot add properties.

C Only if the base record is abstract.

D Only if the base record is sealed.

Derived records can add new properties to extend the data structure.

What happens to equality when you override a property in a derived record?

A Equality only compares base properties.

B Equality ignores overridden properties.

C Equality includes overridden properties in comparison.

D Equality is disabled.

Overridden properties are included in the value-based equality check.

Explain how record inheritance works in C# and how it affects equality.

Think about how records extend data and compare values.

Describe how to declare a derived record and add new properties in C#.

Remember the syntax for inheritance and adding data.