FeedCenter/Application/SystemConfiguration.cs

using System;
using System.IO;
using System.Reflection;
using FeedCenter.Properties;

namespace FeedCenter
{
    public static class SystemConfiguration
    {
        private static bool UseDebugPath => Environment.CommandLine.IndexOf("/debugPath", StringComparison.InvariantCultureIgnoreCase) != -1;

        public static string DataDirectory => UseDebugPath ? Path.GetDirectoryName(Assembly.GetEntryAssembly().Location) : UserSettingsPath;

        public static string UserSettingsPath
        {
            get
            {
                // If we're running in debug mode then use a local path for the database and logs
                if (UseDebugPath)
                    return Path.GetDirectoryName(Assembly.GetEntryAssembly().Location);

                // Get the path to the local application data directory
                var path = Path.Combine(
                    Environment.GetFolderPath(Environment.SpecialFolder.LocalApplicationData),
                    Resources.ApplicationName);

                // Make sure it exists - create it if needed
                if (!Directory.Exists(path))
                    Directory.CreateDirectory(path);

                return path;
            }
        }
    }
}