Can you help me understand in a practical example the usage abstract classes vs interfaces?

Question

Can you give me an almost overly simplistic understanding of abstract class vs inheritance use and help me so I can truly understand the concept and how to implement? I have

Answer 1

Another suggestion - (slightly off topic, but still related)

I recommend, for learning purposes, to avoid automatic properties. It will help you understand what's happening if you implement them explicitly.

For example, instead of doing:

class SomeClass
{
   public string MyProperty
   {
       get;
       set;
   }
}

Try implementing this yourself:

class SomeClass
{
    public string MyProperty
    {
        get
        {
             return "MyValue"; // Probably a private field
        }
        set
        {
             // myField = value; or something like that
        }
}

I mention this because it will help you in this specific case. Since you're using automatic properties, the compiler is "filling in the blanks" for you, and in your case, I think it's preventing you from getting some very useful compiler errors. When trying to understand how these concepts work, doing the work yourself usually makes it easier, not harder.