C#9 Records with custom Equality

RecordsCustomEquality.cs

Rec a = new Rec{myInt = 1, myStr = "test"};
Rec b = a;

System.Console.WriteLine(a == b);

public record Rec()
{
    public int myInt;
    public string myStr;
    
    public virtual bool Equals(Rec other) => false;
    public override int GetHashCode() => 1;  
}

For an interactive example, see this sharplab

Thanks a lot for this, works now and I finally understand it :-).