Here’s an example of implementing ICloneable in two custom classes so that you can use the Clone method to do a deep copy.

To do a deep copy of the Apple class, we need to copy its members that are value types and then create a new instance of Color by calling its Clone method.

public class Apple : ICloneable
{
    
    public double Size { get; set; }
    public ColorCustom Color { get; set; }
 
    public object Clone()
    {
        Apple newApple = (Apple)this.MemberwiseClone();

        newApple.Color = (ColorCustom)this.Color.Clone();
 
        return newPerson;
    }
}

The Colorclass uses MemberwiseClone to make a copy of itself.

public class Apple : ICloneable
{
    public int size { get; set; }
    public string color { get; set; }
 
    public object Clone()
    {
        return this.MemberwiseClone();
    }
}

Cloning an Apple:

Apple appleClone = (Apple)apple.Clone();
Example of Implementing ICloneable for Deep Copies C#
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