public class DBLogger:ILogger

    {
        private bool _isDisposed;
        private readonly ApplicationDbContext _dbContext;
        public DBLogger(ApplicationDbContext dbContext)
        {
            _dbContext = dbContext ?? throw new ArgumentNullException(nameof(dbContext));
        }


        public void Log<TState>(LogLevel logLevel, EventId eventId, TState state, Exception? exception, Func<TState, Exception?, string> formatter)
        {
            var dblLogItem = new DBLog()
            {
                EventName = eventId.Name,
                LogLevel = logLevel.ToString(),
                Message = exception?.Message,
                StackTrace=exception?.StackTrace                
            }; 
            _dbContext.DBLogs.Add(dblLogItem);
            _dbContext.SaveChanges();
        }

        public bool IsEnabled(LogLevel logLevel)
        {
            return true;
        }

        public IDisposable BeginScope<TState>(TState state)
        {
            return null;
        }
    }

public class DbLoggerProvider:ILoggerProvider
    {
        private bool _isDisposed;
        private readonly ApplicationDbContext _dbContext;
        public DbLoggerProvider(ApplicationDbContext dbContext)
        {
            _dbContext = dbContext ?? throw new ArgumentNullException(nameof(dbContext));
        }

        public ILogger CreateLogger(string categoryName)
        {
            return new D‌BLogger(_dbContext);
        }

        public void Dispose()
        {
        }
    }  
 

public void Configure(IApplicationBuilder app, IWebHostEnvironment env, ILoggerFactory loggerFactory)
        {
            .
            .
            .
            #region CustomLogProvider
            var serviceProvider = app.ApplicationServices.CreateScope().ServiceProvider;
            var appDbContext = serviceProvider.GetRequiredService<ApplicationDbContext>();
            loggerFactory.AddProvider(new DbLoggerProvider(appDbContext));
            #endregion
            .
            .
            .

public class DbLoggerProvider:ILoggerProvider
    {
        private readonly CancellationTokenSource _cancellationTokenSource = new();
        private readonly IList<DBLog> _currentBatch = new List<DBLog>();
        private readonly TimeSpan _interval = TimeSpan.FromSeconds(2);

        private readonly BlockingCollection<DBLog> _messageQueue = new(new ConcurrentQueue<DBLog>());

        private readonly Task _outputTask;
        private readonly ApplicationDbContext _dbContext;
        private bool _isDisposed;

        public DbLoggerProvider(ApplicationDbContext dbContext)
        {
            _dbContext = dbContext ?? throw new ArgumentNullException(nameof(dbContext));
            _outputTask = Task.Run(ProcessLogQueue);
        }
        public ILogger CreateLogger(string categoryName)
        {
            return new DBLogger(this,categoryName);
        }
        private async Task ProcessLogQueue()
        {
            while (!_cancellationTokenSource.IsCancellationRequested)
            {
                while (_messageQueue.TryTake(out var message))
                {
                    try
                    {
                        _currentBatch.Add(message);
                    }
                    catch
                    {
                        //cancellation token canceled or CompleteAdding called
                    }
                }

                await SaveLogItemsAsync(_currentBatch, _cancellationTokenSource.Token);
                _currentBatch.Clear();

                await Task.Delay(_interval, _cancellationTokenSource.Token);
            }
        }
        internal void AddLogItem(DBLog appLogItem)
        {
            if (!_messageQueue.IsAddingCompleted)
            {
                _messageQueue.Add(appLogItem, _cancellationTokenSource.Token);
            }
        }
        private async Task SaveLogItemsAsync(IList<DBLog> items, CancellationToken cancellationToken)
        {
            try
            {
                if (!items.Any())
                {
                    return;
                }

                // We need a separate context for the logger to call its SaveChanges several times,
                // without using the current request's context and changing its internal state.
                foreach (var item in items)
                {
                    var addedEntry = _dbContext.DbLogs.Add(item);
                }

                await _dbContext.SaveChangesAsync(cancellationToken);

            }
            catch
            {
                // don't throw exceptions from logger
            }
        }

        [SuppressMessage("Microsoft.Usage", "CA1031:catch a more specific allowed exception type, or rethrow the exception",
            Justification = "don't throw exceptions from logger")]
        private void Stop()
        {
            _cancellationTokenSource.Cancel();
            _messageQueue.CompleteAdding();

            try
            {
                _outputTask.Wait(_interval);
            }
            catch
            {
                // don't throw exceptions from logger
            }
        }
        public void Dispose()
        {
            Dispose(true);
            GC.SuppressFinalize(this);
        }

        protected virtual void Dispose(bool disposing)
        {
            if (!_isDisposed)
            {
                try
                {
                    if (disposing)
                    {
                        Stop();
                        _messageQueue.Dispose();
                        _cancellationTokenSource.Dispose();
                        _dbContext.Dispose();
                    }
                }
                finally
                {
                    _isDisposed = true;
                }
            }
        }
    }  
 

public class DBLogger:ILogger
    {
        private readonly LogLevel _minLevel;
        private readonly DbLoggerProvider _loggerProvider;
        private readonly string _categoryName;

        public DBLogger(
            DbLoggerProvider loggerProvider,
            string categoryName
        )
        {
            _loggerProvider= loggerProvider ?? throw new ArgumentNullException(nameof(loggerProvider));
            _categoryName= categoryName;
        }

        public IDisposable BeginScope<TState>(TState state)
        {
            return new NoopDisposable();
        }

        public bool IsEnabled(LogLevel logLevel)
        {
            return logLevel >= _minLevel;
        }

        public void Log<TState>(
            LogLevel logLevel,
            EventId eventId,
            TState state,
            Exception exception,
            Func<TState, Exception, string> formatter)
        {
            if (!IsEnabled(logLevel))
            {
                return;
            }

            if (formatter == null)
            {
                throw new ArgumentNullException(nameof(formatter));
            }

            var message = formatter(state, exception);

            if (exception != null)
            {
                message = $"{message}{Environment.NewLine}{exception}";
            }

            if (string.IsNullOrEmpty(message))
            {
                return;
            }

            var dblLogItem = new DBLog()
            {
                EventName = eventId.Name,
                LogLevel = logLevel.ToString(),
                Message = $"{_categoryName}{Environment.NewLine}{message}",
                StackTrace=exception?.StackTrace
            };
            _loggerProvider.AddLogItem(dblLogItem);
        }

      

        private class NoopDisposable : IDisposable
        {
            public void Dispose()
            {
                Dispose(true);
                GC.SuppressFinalize(this);
            }

            protected virtual void Dispose(bool disposing)
            {
            }
        }
    }  
 

private static void AddOrUpdate(ResXResourceEntry resource, string filePath)
{
  var list = Read(filePath);
  var entry = list.SingleOrDefault(l => l.Key == resource.Key);
  if (entry == null)
  {
    list.Add(resource);
  }
  else
  {
    entry.Value = resource.Value;
  }
  Write(list, filePath);
}

private static void Remove(string key, string filePath)
{
  var list = Read(filePath);
  list.RemoveAll(l => l.Key == key); 
  Write(list, filePath);
}

public class ResXResourceManager
{
  private static readonly object Lock = new object();
  public string ResourcesPath { get; private set; }
  public ResXResourceManager(string resourcesPath)
  {
    ResourcesPath = resourcesPath;
  }
  public IEnumerable<ResXResourceEntry> GetAllResources(string resourceCategory)
  {
    var resourceFilePath = GetResourceFilePath(resourceCategory);
    return Read(resourceFilePath);
  }
  public void AddOrUpdateResource(ResXResourceEntry resource, string resourceCategory)
  {
    var resourceFilePath = GetResourceFilePath(resourceCategory);
    AddOrUpdate(resource, resourceFilePath);
  }
  public void DeleteResource(string key, string resourceCategory)
  {
    var resourceFilePath = GetResourceFilePath(resourceCategory);
    Remove(key, resourceFilePath);
  }
  private string GetResourceFilePath(string resourceCategory)
  {
    var extension = Thread.CurrentThread.CurrentUICulture.TwoLetterISOLanguageName == "en" ? ".resx" : ".fa.resx";
    var resourceFilePath = Path.Combine(ResourcesPath, resourceCategory.Replace(".", "\\") + extension);
    return resourceFilePath;
  }
  private static void AddOrUpdate(ResXResourceEntry resource, string filePath)
  {
    var list = Read(filePath);
    var entry = list.SingleOrDefault(l => l.Key == resource.Key);
    if (entry == null)
    {
      list.Add(resource);
    }
    else
    {
      entry.Value = resource.Value;
    }
    Write(list, filePath);
  }
  private static void Remove(string key, string filePath)
  {
    var list = Read(filePath);
    list.RemoveAll(l => l.Key == key); 
    Write(list, filePath);
  }
  private static List<ResXResourceEntry> Read(string filePath)
  {
    lock (Lock)
    {
      using (var reader = new ResXResourceReader(filePath))
      {
        var list = reader.Cast<object>().Cast<DictionaryEntry>().ToList();
        return list.Select(l => new ResXResourceEntry(l)).ToList();
      }
    }
  }
  private static void Write(IEnumerable<ResXResourceEntry> resources, string filePath)
  {
    lock (Lock)
    {
      using (var writer = new ResXResourceWriter(filePath))
      {
        foreach (var resource in resources)
        {
          writer.AddResource(resource.Key, resource.Value);
        }
      }
    }
  }
}

public class BuildManager
{
  public string ProjectPath { get; private set; }
  public BuildManager(string projectPath)
  {
    ProjectPath = projectPath;
  }
  public void Build()
  {
    var regKey = Registry.LocalMachine.OpenSubKey(@"SOFTWARE\Microsoft\MSBuild\ToolsVersions\4.0");
    if (regKey == null) return;
    var msBuildExeFilePath = Path.Combine(regKey.GetValue("MSBuildToolsPath").ToString(), "MSBuild.exe");
    var startInfo = new ProcessStartInfo
    {
      FileName = msBuildExeFilePath,
      Arguments = ProjectPath,
      WindowStyle = ProcessWindowStyle.Hidden
    };
    var process = Process.Start(startInfo);
    process.WaitForExit();
  }
}

public class ResXResourceFileManager
{
  public static readonly string BinPath = Path.GetDirectoryName(Assembly.GetExecutingAssembly().GetName().CodeBase.Replace("file:///", ""));
  public static readonly string ResourcesPath = Path.Combine(BinPath, @"..\App_Data\Resources");
  public static readonly string ResourceProjectPath = Path.Combine(ResourcesPath, "Resources.csproj");
  public static readonly string DefaultsPath = Path.Combine(ResourcesPath, "Defaults");
  public static void CopyDlls()
  {
    File.Copy(Path.Combine(ResourcesPath, @"bin\debug\Resources.dll"), Path.Combine(BinPath, "Resources.dll"), true);
    File.Copy(Path.Combine(ResourcesPath, @"bin\debug\fa\Resources.resources.dll"), Path.Combine(BinPath, @"fa\Resources.resources.dll"), true);
    Directory.Delete(Path.Combine(ResourcesPath, "bin"), true);
    Directory.Delete(Path.Combine(ResourcesPath, "obj"), true);
  }
  public static void RestoreAll()
  {
    RestoreDlls();
    RestoreResourceFiles();
  }
  public static void RestoreDlls()
  {
    File.Copy(Path.Combine(DefaultsPath, @"bin\Resources.dll"), Path.Combine(BinPath, "Resources.dll"), true);
    File.Copy(Path.Combine(DefaultsPath, @"bin\fa\Resources.resources.dll"), Path.Combine(BinPath, @"fa\Resources.resources.dll"), true);
  }
  public static void RestoreResourceFiles(string resourceCategory)
  {
    RestoreFile(resourceCategory.Replace(".", "\\"));
  }
  public static void RestoreResourceFiles()
  {
    RestoreFile(@"Global\Configs");
    RestoreFile(@"Global\Exceptions");
    RestoreFile(@"Global\Paths");
    RestoreFile(@"Global\Texts");

    RestoreFile(@"ViewModels\Employees");
    RestoreFile(@"ViewModels\LogOn");
    RestoreFile(@"ViewModels\Settings");

    RestoreFile(@"Views\Employees");
    RestoreFile(@"Views\LogOn");
    RestoreFile(@"Views\Settings");
  }

  private static void RestoreFile(string subPath)
  {
    File.Copy(Path.Combine(DefaultsPath, subPath + ".resx"), Path.Combine(ResourcesPath, subPath + ".resx"), true);
    File.Copy(Path.Combine(DefaultsPath, subPath + ".fa.resx"), Path.Combine(ResourcesPath, subPath + ".fa.resx"), true);
  }
}

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