Question

I want to let two classes communicate with each other. I want to use a dictionary to be able to add items. I’ve simplified my pattern to solve it easily. How to use dictionary to add a new item.

I want to generate only one instance of MyClass. That is important. This is a kind of a trick…

public interface IHost
{

}

public class MyClass:IHost
{
   public Dictionary<int,string>; dic { get; set;}

   public MyClass()
   {
       dic =  new Dictionary<int,string>();
   }
}

public class  MyClass2 : IHost
{
    public MyClass()
    {

    }

    public void Save()
    {
      dic.Add(1,"vxcvcx");
    }
}

Error that I get:

The name ‘dic’ does not exist in the current context

Answer 1

use a base class instead of an interface:

abstract class MyBaseClass
{
    public Dictionary<int,string> dic { get; set; }

    public MyBaseClass()
    {
        dic = new Dictionary<int, string>(5);
    }

    public void Add(int key, string value)
    {
        dic.Add(key, value);
    }
}

public class MyClass1 : MyBaseClass
{
    public MyClass1():base()
    {          
    }        
}

public class MyClass2 : MyBaseClass
{
    public MyClass2():base()
    {

    }

    public void Save()
    {
        Add(1, "somevalue");
    }
}