How do I instantiate a generic class

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Hi -

I'm learning more about generics and I'm wondering how to instantiate a generic typed class. Here is the class

public class MyGenericCommand<T> : ICommand<T,T> where T : IMyBaseStuff<IBaseStuff>
{
 ///reset of class code here
}

In another class would want some thing like

private MyGenericCommand<some class> _command;

Thanks

What I have tried:

c# Generic on variable declaration, is this possible? - Stack Overflow[^]

Posted 5-May-17 10:50am

Troy Bryant

Updated 6-May-17 1:16am

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Richard MacCutchan · Answer 1 · 2017-05-05T21:59:00

Solution 1

See Generics (C# Programming Guide) | Microsoft Docs[^].

Posted 5-May-17 21:59pm

Richard MacCutchan

F-ES Sitecore · Answer 2 · 2017-05-06T01:16:00

Doesn't make a lot of sense, but

public interface ICommand<T1, T2>
{
    T1 PropA { get; set; }
    T2 PropB { get; set; }
}

public interface IBaseStuff
{
    int PropD { get; set; }
}

public interface IMyBaseStuff<T>
{
    T PropC { get; set; }
}

public class MyGenericCommand<T> : ICommand<T, T> where T : IMyBaseStuff<IBaseStuff>
{
    public T PropA { get; set; }
    public T PropB { get; set; }
}

public class BaseStuff : IBaseStuff
{
    public int PropD {get;set;}
}

public class MyCommandClass : IMyBaseStuff<IBaseStuff>
{
    public IBaseStuff PropC {get; set;}
}

Usage

MyGenericCommand<MyCommandClass> _command = new MyGenericCommand<MyCommandClass>();
_command.PropA = new MyCommandClass();
_command.PropB = new MyCommandClass();

_command.PropA.PropC = new BaseStuff();
_command.PropA.PropC.PropD = 123;