Convert from List into Ienumerable Format
Ienumerable _Book_Ie List _Book_List How Shall I Do in Order to Convert _Book_List into Ienumerable Format? 4 6 Answers You Don't Need to Convert It. List...
IEnumerable<Book> _Book_IE
List<Book> _Book_List
How shall I do in order to convert _Book_List into IEnumerable format?
6 Answers
You don't need to convert it. List<T> implements the IEnumerable<T> interface so it is already an enumerable.
This means that it is perfectly fine to have the following:
public IEnumerable<Book> GetBooks()
{
List<Book> books = FetchEmFromSomewhere();
return books;
}
as well as:
public void ProcessBooks(IEnumerable<Book> books)
{
// do something with those books
}
which could be invoked:
List<Book> books = FetchEmFromSomewhere();
ProcessBooks(books);
You can use the extension method AsEnumerable in Assembly System.Core and System.Linq namespace :
List<Book> list = new List<Book>();
return list.AsEnumerable();
This will, as said on this MSDN link change the type of the List in compile-time. This will give you the benefits also to only enumerate your collection we needed (see MSDN example for this).
Why not use a Single liner ...
IEnumerable<Book> _Book_IE= _Book_List as IEnumerable<Book>;
As far as I know List<T> implements IEnumerable<T>. It means that you do not have to convert or cast anything.
IEnumerable<Book> _Book_IE;
List<Book> _Book_List;
If it's the generic variant:
_Book_IE = _Book_List;
If you want to convert to the non-generic one:
IEnumerable ie = (IEnumerable)_Book_List;
You need to
using System.Linq;
to use IEnumerable options at your List.
David Miller brings 15 years of experience in global economics, personal finance strategy, and market dynamics. He specializes in turning complex economic trends into actionable insights for everyday readers.
