Value equality in records in C Sharp (C#) - Mini Project: Build & Apply

Value equality in records

📖 Scenario: Imagine you are creating a simple contact list app. You want to store contacts as records and check if two contacts are the same based on their values.

🎯 Goal: Build a C# program that creates two contact records with the same data and checks if they are equal using value equality.

📋 What You'll Learn

Create a record named Contact with two properties: string Name and string Phone.

Create two Contact objects with the same Name and Phone values.

Compare the two Contact objects using the == operator.

Print "Equal" if they are equal, otherwise print "Not Equal".

💡 Why This Matters

🌍 Real World

Records are useful for storing data where you want to compare objects by their content, like contacts, products, or settings.

💼 Career

Understanding value equality in records helps in writing clean, bug-free code for data models in business applications.

1

Create the Contact record

Create a record called Contact with two properties: string Name and string Phone.

C Sharp (C#)

// Your code here

Need a hint?

Use the record keyword to define a record with positional parameters.

2

Create two Contact objects with the same values

Create two Contact objects named contact1 and contact2 with Name set to "Alice" and Phone set to "12345".

C Sharp (C#)

public record Contact(string Name, string Phone);

// Your code here

Need a hint?

Use the new keyword to create objects from the Contact record.

3

Compare the two Contact objects using value equality

Use an if statement to compare contact1 and contact2 using the == operator.

C Sharp (C#)

public record Contact(string Name, string Phone);

Contact contact1 = new Contact("Alice", "12345");
Contact contact2 = new Contact("Alice", "12345");

// Your code here

Need a hint?

Records in C# support value equality with the == operator by default.

4

Print the comparison result

Inside the if statement, print "Equal". Inside the else, print "Not Equal".

C Sharp (C#)

public record Contact(string Name, string Phone);

Contact contact1 = new Contact("Alice", "12345");
Contact contact2 = new Contact("Alice", "12345");

if (contact1 == contact2)
{
    // Your code here
}
else
{
    // Your code here
}

Need a hint?

Use Console.WriteLine to print the result.