- A
classdefines fields, properties and methods. - Auto-properties:
public string Name { get; set; } initproperties can only be set when the object is created.- Constructors share the class name; primary constructors (C# 12) put parameters on the class itself.
recordtypes are concise immutable data classes.
C# Classes & Objects
Fields, properties and constructors.
✍️ 2 exercises in this lessonKey Takeaways: C# Classes & Objects
Mastering C# Classes & Objects helps you write clean and reliable C# code. Follow standard conventions, test edge cases, and keep logic simple. Try running the code example below and complete the exercises to build confidence.
C# Classes & Objects Code Example
C#var acc = new Account("Ayesha");
acc.Deposit(5000);
acc.Deposit(1500);
Console.WriteLine($"{acc.Owner}: {acc.Balance}");
var p = new Product("Laptop", 185000m);
Console.WriteLine(p);
Console.WriteLine(p with { Price = 175000m });
class Account
{
public string Owner { get; }
public decimal Balance { get; private set; }
public Account(string owner) => Owner = owner;
public void Deposit(decimal amount)
{
if (amount <= 0) throw new ArgumentException("Amount must be positive");
Balance += amount;
}
}
record Product(string Name, decimal Price);Output
Ayesha: 6500
Product { Name = Laptop, Price = 185000 }
Product { Name = Laptop, Price = 175000 }
Run this example on your own computer. The "Get Started" lesson shows how to set it up.
C# Classes & Objects Practice Exercises
Check what you learned in “C# Classes & Objects”.
/ 2 solved
Fill in the blank
Declare an auto-property with a getter only.
public string Owner { ; }
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Multiple choice
What is a record in C#?
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