C#: Generic types that have a constructor?

Question

I have the following C# test code:

  class MyItem
  {
    MyItem( int a ) {}
  }

  class MyContainer< T >
    where T : MyItem, new()
  {
    public void          


        

Answer 1

It can be done with reflection:

public void CreateItem()
{
  int constructorparm1 = 10;
  T oItem = Activator.CreateInstance(typeof(T), constructorparm1) as T;
}

But there is no generic constraint to ensure that T implements the desired constructor, so I wouldn't advise doing this unless you are careful to declare that constructor in every type that implements the interface.