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ApplicationDeployment::DownloadFileGroupProgressChanged Event

Occurs when status information is available on a file download operation initiated by a call to DownloadFileGroupAsync.

Namespace:  System.Deployment.Application
Assembly:  System.Deployment (in System.Deployment.dll)

public:
 event DeploymentProgressChangedEventHandler^ DownloadFileGroupProgressChanged {
	void add (DeploymentProgressChangedEventHandler^ value);
	void remove (DeploymentProgressChangedEventHandler^ value);
}

The DownloadFileGroupProgressChanged event is called on the main application thread. It is thread safe to call your application's Windows Forms controls directly within this callback.

Use the information supplied in DeploymentProgressChangedEventArgs to communicate progress information to your users.

The following code example downloads a group of Help files in the background. The example requires that you deploy a Windows Forms application that includes a StatusStrip control, and that this control contain a ToolStripStatusLabel control named downloadStatus.

void LaunchAppUpdate()
{
    if (ApplicationDeployment::IsNetworkDeployed)
    {
        ApplicationDeployment^ ad =
            ApplicationDeployment::CurrentDeployment;
        ad->UpdateCompleted +=
            gcnew AsyncCompletedEventHandler(this,
            &Form1::LaunchAppUpdate_UpdateCompleted);

        ad->UpdateAsync();
    }
}

void LaunchAppUpdate_UpdateCompleted(Object^ sender,
    AsyncCompletedEventArgs^ e)
{
    if (!e->Cancelled)
    {
        if (nullptr != e->Error)
        {
            System::Windows::Forms::DialogResult dr =
                MessageBox::Show(
                "The application has been updated. Restart?",
                "Restart Application",
                MessageBoxButtons::OKCancel);
            if (System::Windows::Forms::DialogResult::OK == dr)
            {
                Application::Restart();
            }
        }
        else
        {
            // Replace with your own error reporting or logging.
            MessageBox::Show(
                "The application encountered an error in " +
                "downloading the latest update. Error: {0}",
                e->Error->Message);
        }
    }
    else
    {
        // Replace with your own error reporting or logging.
        MessageBox::Show(
            "The update of the application's latest version was " +
            "cancelled.");
    }
}

.NET Framework

Supported in: 4.5.2, 4.5.1, 4.5, 4, 3.5, 3.0, 2.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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