How to create nested class

Question

I need to serialize and send someone a file. There are two types of struct which I will deal with, one is called trade and one is called quote. I am trying to nest them inside the class tickdata but I don't seem to get it.

public class tickdata
{
    public class trade
    {
        long time;
        double price;
        uint size;
    }
    public class quote
    {
        long time;
        double bid;
        double ask;
        double bidsize;
        double asksize;
    }
}

Why don't you create the 2 classes Trade and Quote and give TickData 2 members, one of type Trade and one of Quote? — Mirco
– Mirco, Commented Mar 11, 2014 at 9:36
Did my answer helped you? Then please accept. If not, do you have further questions? — Mirco
– Mirco, Commented Mar 14, 2014 at 10:40

Mirco · Accepted Answer · 2014-03-11 09:38:13Z

1

Do it like this

public class tickdata
{
private Trade trade;
private Quote quote;
}

public class trade
{
long time;
double price;
uint size;
        }

    public class quote
    {
        long time;
        double bid;
        double ask;
        double bidsize;
        double asksize;
    }

Read more about http://en.wikipedia.org/wiki/Object_composition and http://en.wikipedia.org/wiki/Encapsulation_(object-oriented_programming)

This is not C#-Specific, it is important for Object-Orientation at all

answered Mar 11, 2014 at 9:38

Mirco

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4 Comments

x2. Over a year ago

But why fields are private?

Mirco Over a year ago

Provide setter and getter for the fields. Objects should not expose their fields directly to their environement. Read about en.wikipedia.org/wiki/…

x2. Over a year ago

it's can be done like public Trade trade {get; set;}

Mirco Over a year ago

Sorry, I'm coming from a Java Background :-) Do it like this, as it is the C#-Way. But keep the information-hiding in mind every time

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