BlueSky.Commands.Tools.Package.PackageHelperMethods.PackageFileInstall C# (CSharp) Method

        public UAReturn PackageFileInstall(string[] pkgfilenames, bool autoLoad = true, bool overwrite = false)//06Dec2013 For installing package
        {
            if (pkgfilenames != null && pkgfilenames.Length > 0)
            {
                return service.installPackage(pkgfilenames, autoLoad , overwrite);//(packagename, filepath);
            }
            return null;
        }

 protected override void OnExecute(object param)
 {
     //Window1 appwindow = LifetimeService.Instance.Container.Resolve<Window1>();
     try
     {
         bool           autoLoad = true, overwrite = true;
         OpenFileDialog openFileDialog = new OpenFileDialog();
         //// Get initial Dir ////
         //string initDir = confService.GetConfigValueForKey("InitialDirectory");
         //openFileDialog.InitialDirectory = initDir;
         openFileDialog.Filter      = FileNameFilter;
         openFileDialog.Multiselect = true;
         bool?output = openFileDialog.ShowDialog(Application.Current.MainWindow);
         if (output.HasValue && output.Value)
         {
             string[]             pkgfilenames = openFileDialog.FileNames;
             PackageHelperMethods phm          = new PackageHelperMethods();
             UAReturn             r            = phm.PackageFileInstall(pkgfilenames, autoLoad, overwrite);// PackageFileInstall(pkgfilenames);//openFileDialog.FileName);
             if (r != null && r.Success)
             {
                 SendToOutputWindow("Install Package", r.SimpleTypeData.ToString());
                 MessageBox.Show("Please restart BlueSky Application to use the updated BlueSky package(s)", "Restart BlueSky Application", MessageBoxButton.OK, MessageBoxImage.Warning);
             }
             else
             {
                 if (r != null)
                 {
                     string msg = r.SimpleTypeData as string;
                     SendToOutputWindow("Error Installing Package", msg);
                 }
             }
             ///Set initial Dir.///
             //initDir = Path.GetDirectoryName(openFileDialog.FileName);
             //confService.ModifyConfig("InitialDirectory", initDir);
             //confService.RefreshConfig();
         }
     }
     catch (Exception ex)
     {
         MessageBox.Show("Error while installing package.", "Error Occurred!");
         logService.WriteToLogLevel("Error:", LogLevelEnum.Error, ex);
     }
 }