An explicit conversion exists (are you missing a cast?)

Question

I have a method that gives me the groupID of users and then I want to get the news based on the user\'s GroupID.

public IEnumerable Getnews(int G         


        

Answer 1

Getnews returns an IEnumerable (i.e. multiple News) and you are trying to assign it to News news (i.e. a single News item). That doesn't work.

There are two possibilities, depending on what you want to do.

If you want to use all the news, change News news to IEnumerable:

IEnumerable news = newsService.Getnews(GroupID);

If you want to use only a single news, use FirstOrDefault:

News news = newsService.Getnews(GroupID).FirstOrDefault();

Depending on what you expect, you also could use one of the following:

• First(): You expect Getnews to always return at least one news. This will throw an exception if no news are returned.
• Single(): You expect Getnews to always return exactly one news. This will throw an exception if more than one or zero news are returned.
• SingleOrDefault(): You expect zero or one news to be returned. This will throw an exception if more than one news are returned.