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UpdateCheckInfo Class

Represents detailed update information obtained through a call to CheckForDetailedUpdate.

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

public ref class UpdateCheckInfo

With UpdateCheckInfo, you can decide whether to upgrade your ClickOnce application based on information about the newest version. UpdateAvailable will return a Boolean value indicating whether there is a new update at all. The AvailableVersion property provides the version number of the new version, while MinimumRequiredVersion provides the earliest version that the user should have installed. IsUpdateRequired expresses whether the latest available update is required of the user. Finally, UpdateSizeBytes expresses the total size of the update.

NoteNote:

Visual Studio adds the <deploymentProvider> element to the manifest only if the application is set to check for updates, so you either have to check The application should check for updates or specify an update URL in Update location in the Application Updates Dialog Box.

The following code example uses UpdateAvailable to determine if there is a new application update, and IsUpdateRequired to determine whether to ask the user to install the update.

public:
    void InstallUpdateSync()
    {
        if (ApplicationDeployment::IsNetworkDeployed)
        {
            bool isUpdateAvailable = false;
            ApplicationDeployment^ appDeployment =
                ApplicationDeployment::CurrentDeployment;

            try
            {
                isUpdateAvailable = appDeployment->CheckForUpdate();
            }
            catch (InvalidOperationException^ ex)
            {
                MessageBox::Show("The update check failed. Error: {0}",
                    ex->Message);
                return;
            }

            if (isUpdateAvailable)
            {
                try
                {
                    appDeployment->Update();
                    MessageBox::Show(
                        "The application has been upgraded, and will now " +
                        "restart.");
                    Application::Restart();
                }
                catch (Exception^ ex)
                {
                    MessageBox::Show("The update failed. Error: {0}",
                        ex->Message);
                    return;
                }

            }
        }
    }

System::Object
  System.Deployment.Application::UpdateCheckInfo

Any public static (Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.

Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98

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

.NET Framework

Supported in: 3.5, 3.0, 2.0
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