Method return an interface

Question

Hi All,

I\'m thinking in this line of code

IDataReader myReader = questDatabase.ExecuteReader(getQuest);

I\'m using DA

Answer 1

"Returns an interface" really means:

Returns an instance of some class that implements that interface

In this case, it returns an object very similar to a SqlDataReader object, that lets you to execute methods like Read() and implements the IDisposable and IDataRecord interfaces.