IEnumerable<T> Interface

public interface IEnumerable<out T> : System.Collections.IEnumerable

Remarks

The IEnumerable<T> interface is the base interface for all generic collections that can be enumerated. It allows you to iterate through a collection using a foreach loop in C# or a For Each loop in Visual Basic.

Collections that implement IEnumerable<T> provide a way to access each element in the collection sequentially. The GetEnumerator method is the key to this functionality, returning an IEnumerator<T> object that can be used to iterate through the collection.

The out keyword in the generic type parameter T indicates that the type parameter is covariant. This means that you can use a more general type than the one specified, for example, you could use an IEnumerable<object> to refer to a sequence of string objects.