add a getter to a subclass in csharp

To add a getter to a subclass in C#, you can create a read-only property in the subclass that retrieves the value from a private field in the subclass. Here is an example:

main.cs
public class Superclass
{
    protected int _myValue;
    
    // other members of superclass 
}

public class Subclass : Superclass
{
    public int MyValue
    {
        get { return _myValue; }
    }
}
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In this example, the subclass Subclass has a read-only property called MyValue that returns the value of the private field _myValue, which is defined in the superclass Superclass. The protected access modifier is used to allow the subclass to access the _myValue field.

Note that because Superclass is the parent class of Subclass, Subclass inherits all of the public and protected members of Superclass, including the _myValue field. By creating a read-only property that returns the value of _myValue, we are effectively exposing that value through the subclass.