DynamicAssemblyLoader.cs

DynamicAssemblyLoader.cs

public class DynamicAssemblyLoader
{
  public Dictionary<string, Assembly> Assemblies = new Dictionary<string, Assembly>();
  
  private void InitalLoadAssemblies()
  {
      DirectoryInfo dir = new DirectoryInfo(_ExtPath);
  
      foreach (FileInfo f in dir.GetFiles("*ServiceModule.dll"))
      {
          LoadAssembly(f.FullName);
      }
  }
  private void LoadAssembly(string fullPath)
  {
      string key = Path.GetFileNameWithoutExtension(fullPath);
      Assembly assembly = null;
  
      if (!Assemblies.TryGetValue(key, out assembly))
      {
          assembly = Assembly.Load(File.ReadAllBytes(fullPath));
          Assemblies.Add(key, assembly);
      }
  }
  
  private void MonitorExtensionDirectory()
  {
      FileSystemWatcher watcher = new FileSystemWatcher();
      watcher.Filter = "*ServiceModule.dll";
  
      //watcher.Created += new FileSystemEventHandler(Watcher_ExtensionCreated);
      watcher.Changed += new FileSystemEventHandler(Watcher_ExtensionChanged);
      watcher.Deleted += new FileSystemEventHandler(Watcher_ExtensionDeleted);
  
      watcher.Path = _ExtPath;
      watcher.EnableRaisingEvents = true;
  }
  
  private void RemoveAssembly(string assemblyName)
  {
      Assemblies.Remove(assemblyName);
  }
  
  void Watcher_ExtensionChanged(object sender, FileSystemEventArgs e)
  {
      AppLogger.LogToDatabase(LogPriorities.DEBUG_PRIO_ALL, "*.dll file changed.", e.FullPath);
      RemoveAssembly(Path.GetFileNameWithoutExtension(e.FullPath));
      LoadAssembly(e.FullPath);
  }
  
  void Watcher_ExtensionDeleted(object sender, FileSystemEventArgs e)
  {
      AppLogger.LogToDatabase(LogPriorities.DEBUG_PRIO_ALL, "*.dll file deleted.", e.FullPath);
      RemoveAssembly(Path.GetFileNameWithoutExtension(e.FullPath));
  }
}