FeedCenter/Application/Data/Database.cs

using System.IO;

namespace FeedCenter.Data
{
    public static class Database
    {
        public static string DatabaseFile { get; set; }
        public static string DatabasePath { get; set; }

        public static FeedCenterEntities Entities { get; set; }

        public static bool Exists => File.Exists(DatabaseFile);

        public static bool Loaded { get; set; }

        public static void Load()
        {
            if (Loaded) return;

            Entities = new FeedCenterEntities();

            Loaded = true;
        }
    }
}