IEnumerable<T>

Exposes the enumerator, which supports a simple iteration over a collection of a specific type.

public interface IEnumerable<out T> : IEnumerable

Type parameters

The generic type parameter T is used to specify the type of elements in the collection.

Remarks

The IEnumerable<T> interface is the base interface for all generic collection types in the .NET Framework.

It provides a standard way to iterate over the elements of a collection. When you implement IEnumerable<T>, you must implement the GetEnumerator method, which returns an enumerator for the collection.

The out variance modifier on the type parameter T allows you to use a more general type than what is specified by the generic type parameter. For example, you can assign a List<string> object to a variable of type IEnumerable<object>.

Members

• GetEnumerator

  IEnumerator<T> GetEnumerator()

  Returns an enumerator that iterates through the collection.
• System.Collections.IEnumerable.GetEnumerator

  IEnumerator IEnumerable.GetEnumerator()

  Returns an enumerator that iterates through a collection.

Implements

IEnumerable

Derived by

Many types in the .NET Framework, including:

• List<T>
• Dictionary<TKey, TValue>
• Array
• And many more...

Examples

var numbers = new List<int> { 1, 2, 3 };
foreach (var number in numbers)
{
    Console.WriteLine(number);
}