Initializing IEnumerable <string> In C #

Question

I have this object:

IEnumerable<string> m_oEnum = null; 

and I would like to initialize it. I tried

 IEnumerable<string> m_oEnum = new IEnumerable<string>() { "1", "2", "3"}; 

but he says: “IEnumerable does not contain a method to add a string. Any idea? Thanks

Answer 1

Well, by adding to the answers you can also search

 IEnumerable<string> m_oEnum = Enumerable.Empty<string>(); 

or

 IEnumerable<string> m_oEnum = new string[]{}; 

Answer 2

IEnumerable<T> is the interface. You need to start with a specific type (which implements IEnumerable<T> ). Example:

 IEnumerable<string> m_oEnum = new List<string>() { "1", "2", "3"}; 

Answer 3

How string[] implements IEnumerable

 IEnumerable<string> m_oEnum = new string[] {"1","2","3"} 

Answer 4

IEnumerable is just an interface and therefore cannot be directly created.

You need to create a specific class (e.g. List )

 IEnumerable<string> m_oEnum = new List<string>() { "1", "2", "3" }; 

you can pass this on to anything IEnumerable expects.

Answer 5

 public static IEnumerable<string> GetData() { yield return "1"; yield return "2"; yield return "3"; } IEnumerable<string> m_oEnum = GetData(); 

Answer 6

You cannot instantiate an interface — you must provide a concrete implementation of IEnumerable.