add Item to List at creating object

Question

How do I create a List in a reference?

MyClass classA  = new MyClass();

myFuction(new List<MyClass>( ??? )) 

How Can I add classA to that new List?

Answer 1

Use

 new List<MyClass>() {classA};

For collections, the elements inside the brackets will be executed using the add method (for "regular classes" they will be interpreted as properties)