Property accessors

Context: Property accessors (get and set) control how values are read and written. You can apply different access modifiers to each accessor.

Different Accessibility

private int _value;
public int Value
{
    get => _value;
    private set => _value = value;  // only class can set
}

Getter‑Only Property

public string Name { get; }  // can be set only in constructor

Setter‑Only Property

public string Password { set => /* store */ ; } // no getter

Init Accessor (C# 9+)

Allows setting only during object initialization.

public class Person
{
    public string Name { get; init; }
}
var p = new Person { Name = "Alice" };
// p.Name = "Bob"; // error

Required Properties (C# 11+)

public class User
{
    public required string UserName { get; set; }
}