windows8 后台传递下载

后台传递下载示例

这个示例演示了power-friendly,cost-aware和灵活的行为背景的传输API为Windows运行时应用程序

void MainPage_Loaded( object sender, RoutedEventArgs e)
        {
             //  Figure out what resolution and orientation we are in and respond appropriately
            CheckResolutionAndViewState();

             //  Load the ScenarioList page into the proper frame
            ScenarioList.Navigate(Type.GetType(_rootNamespace +  " .ScenarioList "),  this);
        }

         #region Resolution and orientation code

         void DisplayProperties_LogicalDpiChanged( object sender)
        {
            CheckResolutionAndViewState();
        }

         void CheckResolutionAndViewState()
        {
            VisualStateManager.GoToState( this, ApplicationView.Value.ToString() + DisplayProperties.ResolutionScale.ToString(),  false);
        }

         void MainPage_ViewStateChanged(ApplicationView sender, ApplicationViewStateChangedEventArgs args)
        {
            CheckResolutionAndViewState();
        }

         #endregion

         private  void SetFeatureName( string str)
        {
            FeatureName.Text = str;
        }

        async  void Footer_Click( object sender, RoutedEventArgs e)
        {
            await Windows.System.Launcher.LaunchUriAsync( new Uri(((HyperlinkButton)sender).Tag.ToString()));
        }

         public  void NotifyUser( string strMessage, NotifyType type)
        {
             switch (type)
            {
                 case NotifyType.StatusMessage:
                    StatusBlock.Style = Resources[ " StatusStyle "]  as Style;
                     break;
                 case NotifyType.ErrorMessage:
                    StatusBlock.Style = Resources[ " ErrorStyle "]  as Style;
                     break;
            }
            StatusBlock.Text = strMessage;
        }

         public  void DoNavigation(Type pageType, Frame frame)
        {
            frame.Navigate(pageType,  this);
             if (pageType.Name.Contains( " Input "))
            {
                 //  Raise InputFrameLoaded so downstream pages know that the input frame content has been loaded.
                 if (InputFrameLoaded !=  null)
                {
                    InputFrameLoaded( this,  new EventArgs());
                }
            }
             else
            {
                 //  Raise OutputFrameLoaded so downstream pages know that the output frame content has been loaded.
                 if (OutputFrameLoaded !=  null)
                {
                    OutputFrameLoaded( this,  new EventArgs());
                }
            }

        } 

 完整示例 /Files/risk/windows8/后台传递下载sample.rar