C#: Declaring and using a list of generic classes with different types, how?

Question

Having the following generic class that would contain either string, int, float, long as the type:

public class MyData         


        

Answer 1

Delegates can really help simplify this, and still keep things type-safe:

public void TestMethod1()
{
    Action intInvoke = (o, data) => o.SomeMethod(data);
    Action stringInvoke = (o, data) => o.SomeMethod(data);

    var list = new List 
    {
        new MyData { Data = 10, OnTypedInvoke = intInvoke },
        new MyData { Data = "abc", OnTypedInvoke = stringInvoke }
    };

    var someClass = new SomeClass();
    foreach (var item in list)
    {
        item.OnInvoke(someClass);
    }
}

public abstract class MyData
{
    public Action OnInvoke;
}

public class MyData : MyData
{
    public T Data { get; set; }
    public Action OnTypedInvoke 
    { set { OnInvoke = (o) => { value(o, Data); }; } }
}

public class SomeClass
{
    public void SomeMethod(string data)
    {
        Console.WriteLine("string: {0}", data);
    }

    public void SomeMethod(int data)
    {
        Console.WriteLine("int: {0}", data);
    }
}