Autodesk.Navisworks.Api.Application.ProgressBeginning += new EventHandler<Autodesk.Navisworks.Api.ProgressBeginningEventArgs>(Application_ProgressBeginning);

   Autodesk.Navisworks.Api.Application.ProgressSubOperationBegan += new EventHandler<Autodesk.Navisworks.Api.ProgressSubOperationBeganEventArgs>(Application_ProgressSubOperationBegan);

   Autodesk.Navisworks.Api.Application.ProgressUpdating += new EventHandler<Autodesk.Navisworks.Api.ProgressUpdatingEventArgs>(Application_ProgressUpdating);

   Autodesk.Navisworks.Api.Application.ProgressErrorReporting += new EventHandler<Autodesk.Navisworks.Api.ProgressErrorReportingEventArgs>(Application_ProgressErrorReporting);

   Autodesk.Navisworks.Api.Application.ProgressMessageReporting += new EventHandler<Autodesk.Navisworks.Api.ProgressMessageReportingEventArgs>(Application_ProgressMessageReporting);

   Autodesk.Navisworks.Api.Application.ProgressSubOperationEnded += new EventHandler<Autodesk.Navisworks.Api.ProgressSubOperationEndedEventArgs>(Application_ProgressSubOperationEnded);

   Autodesk.Navisworks.Api.Application.ProgressEnded += new EventHandler<Autodesk.Navisworks.Api.ProgressEndedEventArgs>(Application_ProgressEnded);

   progressBar.ProgressBar.Maximum = 100;

//The following are the declarations for controls in a windows form
//private System.Windows.Forms.StatusStrip statusStrip;
//private System.Windows.Forms.ToolStripStatusLabel statusText;
//private System.Windows.Forms.ToolStripProgressBar progressBar;
//private System.Windows.Forms.ToolStripStatusLabel statusSubText;

void Application_ProgressBeginning(object sender, Autodesk.Navisworks.Api.ProgressBeginningEventArgs e)
{
   statusText.Text = e.Title;
   statusSubText.Text = string.Empty;
   progressBar.Visible = true;
   e.Handled = true;
   statusStrip.Refresh();
}

void Application_ProgressSubOperationBegan(object sender, Autodesk.Navisworks.Api.ProgressSubOperationBeganEventArgs e)
{
   //Mostly unrequired as other events should give all the information required
}

void Application_ProgressSubOperationEnded(object sender, Autodesk.Navisworks.Api.ProgressSubOperationEndedEventArgs e)
{
   //Mostly unrequired as other events should give all the information required
}

void Application_ProgressUpdating(object sender, Autodesk.Navisworks.Api.ProgressUpdatingEventArgs e)
{
   int value = Convert.ToInt32(e.OverallFractionDone * 100.000);
   if (progressBar.ProgressBar.Value != value)
   {
      progressBar.ProgressBar.Value = value;
      e.Handled = true;
      statusStrip.Refresh();
   }
}

void Application_ProgressMessageReporting(object sender, Autodesk.Navisworks.Api.ProgressMessageReportingEventArgs e)
{
   if (statusSubText.Text != e.Message)
   {
      statusSubText.Text = e.Message;
      e.Handled = true;
      statusStrip.Refresh();
   }
}

void Application_ProgressErrorReporting(object sender, Autodesk.Navisworks.Api.ProgressErrorReportingEventArgs e)
{
   if (MessageBox.Show(e.Message, "Error", MessageBoxButtons.OKCancel) != DialogResult.OK)
   {
      e.Canceled = true;
   }
   e.Handled = true;
   statusStrip.Refresh();
}

void Application_ProgressEnded(object sender, Autodesk.Navisworks.Api.ProgressEndedEventArgs e)
{
   statusText.Text = string.Empty;
   statusSubText.Text = string.Empty;
   progressBar.Visible = false;
   statusStrip.Refresh();
}