.cs

using System;
using System.Collections.Generic;
using System.Runtime.InteropServices;
using AGConnectAdmin;
using AGConnectAdmin.Messaging;

namespace ConsoleApp1
{
    class Program
    {
        private const string TOKEN_ANDROID =
            "AJDMI8D_ZsXRA_Bpx9OLZwGwAKF-HFPCAX8hoBYL4AgwIYb1uzGuTm8ffs8Xu5spcn0KUFtyv3z3Hz8PjIiayHskVQOy2naWeppz0XfxnZ9sClGbJbFvaAJVv7HCZPKuVQ";

        static void Main(string[] args)
        {
            AGConnectApp.Create(new AppOptions()
            {
                ClientId = "103010861",
                ClientSecret = "b2bf3771e681be1b57f19f5cbfa5f453affa3349bb605a85ab8e8a5f8f4821cb",
            });

            SendAndroidMessage();
            //SendDataMessage();
        }

        public static void SendAndroidMessage()
        {
            var response = AGConnectMessaging.DefaultInstance.SendAsync(new Message()
            {
                Android = new AndroidConfig()
                {
                    Notification = new AndroidNotification()
                    {
                        Title = "Notification from .NET",
                        Body = "Hello world!",
                        ClickAction = ClickAction.OpenApp()
                    }
                },
                Token = new List<string>() {TOKEN_ANDROID}
            });
            Console.WriteLine("Response: " + response.Result);
        }

        private static void SendDataMessage()
        {
            var response = AGConnectMessaging.DefaultInstance.SendAsync(new Message()
            {
                Data = "{'k1':'v1', 'k2':'v2'}",
                Android = new AndroidConfig()
                {
                    Urgency = UrgencyPriority.HIGH
                },
                Token = new List<string>() {TOKEN_ANDROID}
            });

            Console.WriteLine("Response: " + response.Result);
        }
    }
}