Any function of Generic List of Anonymous

Question

Hey folks ,

I need to do this but List is not considering the Anonymous type !! any idea how i can do this ?

List<object> foo = new List<object>();
var bar = new { coder= "",designer=""};

if(foo.Any(v=>v.coder==bar.coder)==false)

{foo.Add(bar); }

Answer 1

Hi, I'm not part of the dotnet-csharp team, but I know a bit about C#, so I can explain the issue here. There are 2 issues with your code.

The reason .Add isn't recognized is because you need to add "using System.Linq;" at the top of your file.

To get a string value from a dynamic object the syntax is: (string)v.GetType().GetProperty("coder").GetValue(v, null)

A working example of a console app with this code would look like this:

using System;
using System.Collections.Generic;
using System.Linq;

namespace Foo
{
    class Program
    {
        public static void Main(string[] args)
        {
            AddFoo();
        }

        public static void AddFoo()
        {
            List<object> foo = new List<object>();
            dynamic bar = new { coder = "", designer = "" };



            if (foo.Any(v => (string)v.GetType().GetProperty("coder").GetValue(v, null) == bar.coder) == false)

            {
                foo.Add(bar);
            }
        }
    }
}