how to create Generic object, and allow T is null

Question

sorry, my english is poor. how to create MyGeneric object, and allow T is null? thanks very muck.

public class MyGeneric<T>
{
    public int result { get; set; }

    public string message { get; set; }

    public T data { get; set; }
}

//...how to create MyGeneric object, and allow T is null?
var myGeneric = new MyGeneric<null> { 
    result = 1, 
    message = "" 
};

Console.WriteLine(myGeneric.result);

null is not a type. Why do you need this? What are you trying to do? do you want the value of data to be null? — Yacoub Massad
– Yacoub Massad, Commented Jan 2, 2016 at 1:55
can you use a MyGeneric<string>?. The default value of string is null. — Yacoub Massad
– Yacoub Massad, Commented Jan 2, 2016 at 2:33

James · Accepted Answer · 2016-01-02 02:33:25Z

1

In C#, generics vary based on types, not values. This is because generics were intended to be used to allow the designing developer to create types that support members, parameters, and/or return values that vary based on what types a client developer wants to use the generic with.

For example, the built-in List<> type allows developers to store lists of whatever they want and List<> supports this as if the collection was a type-safe collection made just for that type.

answered Jan 2, 2016 at 2:33

James

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