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Application.InstallStateChanged Event

Silverlight

Occurs when the InstallState property value changes.

Namespace:  System.Windows
Assembly:  System.Windows (in System.Windows.dll)

'Declaration
Public Event InstallStateChanged As EventHandler
<Application InstallStateChanged="eventhandler"/>

The following code example demonstrates how to use this event. This example is part of a larger example available in How to: Implement Offline Support for Out-of-Browser Applications.


Private WithEvents app As Application = Application.Current

Public Sub New()

    InitializeComponent()
    LayoutRoot.DataContext = Deployment.Current.OutOfBrowserSettings
    UpdateUI()

    AddHandler NetworkChange.NetworkAddressChanged, _
        AddressOf UpdateNetworkIndicator

End Sub


...


Private Sub App_InstallStateChanged(ByVal sender As Object, _
    ByVal e As EventArgs) Handles app.InstallStateChanged

    UpdateUI()

End Sub

Private Sub UpdateUI()

    UpdateNetworkIndicator()

    installButton.Visibility = If(
        app.InstallState = InstallState.NotInstalled,
        Visibility.Visible, Visibility.Collapsed)

    updateButton.Visibility = If(app.IsRunningOutOfBrowser,
        Visibility.Visible, Visibility.Collapsed)

    isRunningOutOfBrowserTextBlock.Text = _
        app.IsRunningOutOfBrowser.ToString()

    installStateTextBlock.Text = app.InstallState.ToString()

End Sub

Private Sub UpdateNetworkIndicator()

    If app.IsRunningOutOfBrowser Then
        networkIndicator.Visibility = Visibility.Visible
    Else
        networkIndicator.Visibility = Visibility.Collapsed
    End If



    Dim online As Boolean = NetworkInterface.GetIsNetworkAvailable()


    If online Then
        networkIndicator.Text = "ONLINE" 

        updateButton.Visibility = Visibility.Visible
    Else
        networkIndicator.Text = "OFFLINE"
        updateButton.Visibility = Visibility.Collapsed
    End If

End Sub


Silverlight

Supported in: 5, 4, 3

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

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