LINQ: How to declare IEnumerable[AnonymousType]?

Question

This is my function:

    private IEnumerable SeachItem(int[] ItemIds)
    {
        using (var reader = File.OpenText(Application.StartupPath + @\"         


        

Answer 1

You cannot declare IEnumerable because the type has no (known) name at build time. So if you want to use this type in a function declaration, make it a normal type. Or just modify your query to return a IENumerable and stick with that type.

Or return IEnumerable> using the following select statement.

select new KeyValuePair(id, m.Groups[2].Value)