static void Main(string[] args)

{

    string deployFile = @"file://[FOLDER]\WindowsFormsApplication2.application";

    Uri deploymentUri = new Uri(deployFile);

    var iphm = new InPlaceHostingManager(deploymentUri, false);

    iphm.GetManifestCompleted += iphm_GetManifestCompleted;

    iphm.GetManifestAsync();

    Console.ReadLine();

}

static void iphm_GetManifestCompleted(object sender, GetManifestCompletedEventArgs e)

{

    // Check for an error.

    if (e.Error != null)

    {

        // do ...

    }

    var iphm = (InPlaceHostingManager)sender;

    iphm.AssertApplicationRequirements(true);

    iphm.DownloadProgressChanged += iphm_DownloadProgressChanged;

    iphm.DownloadApplicationCompleted += iphm_DownloadApplicationCompleted;

    iphm.DownloadApplicationAsync();

}