update your app demo conks out

11-07-2009 4:35 AM |

Dear Silverlighters and Visual Studioer;

I am seized with the idea that I can put a button on my app to

1) ask the user if they want to install it out of browser

2) figger out if your running alone without the network/server

3) figger out of your app is out of date.

My questions are

1)Can I reclaim the right mouse from silverlight ?

2) can I put a 'update' app on my ap and how does it determine if it is out of date ?

I assume that this is only for out of browser and disconnected apps ?

I'm mainly interested in having a continuous release process, where we change the code under the client all the time.

If it breaks, they can let us know and revert to a previous version or update to a later version if they have been operating out of browser.

How can I recover the build date/time programatically and define major and minor releases ?

Can a live app get out of date relative to the production server ? It the code always updated or if

someone hangs out in the cliend for days on end can they become out of date relative to the server ?

3) I built the sample app (see, i'm learning) but it conks out in run time on the C# code at app.Install();

Here is the code and it conkes out at app.install() on line

it conks out on line 60, app.Install() inside a try {} catch () {} block;

But apparently the catch misses ...

1    using System;
2    using System.Net.NetworkInformation;
3    using System.Windows;
4    using System.Windows.Controls;
5    
6    namespace OutOfBrowser
7    {
8        public partial class MainPage : UserControl
9        {
10           Application app = Application.Current;
11           public MainPage()
12           {
13               InitializeComponent();
14               LayoutRoot.DataContext = Deployment.Current.OutOfBrowserSettings;
15               UpdateUI();
16               app.CheckAndDownloadUpdateCompleted += 
17                   App_CheckAndDownloadUpdateCompleted;
18               app.InstallStateChanged += (s,e) => UpdateUI();
19               NetworkChange.NetworkAddressChanged += 
20                   (s, e) => UpdateNetworkIndicator();
21           }
22   
23           private void UpdateUI()
24           {
25               UpdateNetworkIndicator();
26   
27               installButton.Visibility =
28                   app.InstallState == InstallState.NotInstalled ?
29                   Visibility.Visible : Visibility.Collapsed;
30   
31               updateButton.Visibility =
32                   app.IsRunningOutOfBrowser ? 
33                   Visibility.Visible : Visibility.Collapsed;
34   
35               isRunningOutOfBrowserTextBlock.Text = 
36                   app.IsRunningOutOfBrowser.ToString();
37   
38               installStateTextBlock.Text = app.InstallState.ToString();
39           }
40   
41           private void UpdateNetworkIndicator()
42           {
43               networkIndicator.Visibility =
44                   app.IsRunningOutOfBrowser ?
45                   Visibility.Visible : Visibility.Collapsed;
46   
47               bool online = NetworkInterface.GetIsNetworkAvailable();
48   
49               networkIndicator.Text = online ?
50                   "ONLINE" : "OFFLINE";
51   
52               updateButton.Visibility = online ?
53                   Visibility.Visible : Visibility.Collapsed;
54           }
55   
56           private void installButton_Click(object sender, RoutedEventArgs e)
57           {
58               try
59               {
60                   app.Install();
61               }
62               catch (InvalidOperationException)
63               {
64                   MessageBox.Show("The application is already installed.");
65               }
66           }
67   
68           private void updateButton_Click(object sender, RoutedEventArgs e)
69           {
70               app.CheckAndDownloadUpdateAsync();
71           }
72   
73           private void App_CheckAndDownloadUpdateCompleted(object sender,
74               CheckAndDownloadUpdateCompletedEventArgs e)
75           {
76               if (e.UpdateAvailable)
77               {
78                   MessageBox.Show("An application update has been downloaded. " +
79                       "Restart the application to run the new version.");
80               }
81               else if (e.Error != null && 
82                   e.Error is PlatformNotSupportedException)
83               {
84                   MessageBox.Show("An application update is available, " +
85                       "but it requires a new version of Silverlight. " +
86                       "Visit the application home page to upgrade.");
87               }
88               else
89               {
90                   MessageBox.Show("There is no update available.");
91               }
92           }
93   
94       }
95   }

Re: Re: update your app demo conks out

11-07-2009 6:18 PM |

i guess i need a bigger catch mitt... dB