private void backgroundWorker1_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
{
UnInstalling ui = (UnInstalling)this.stepPanel.Controls[0];
ui.status.Text = "deleting program folder...";
ui.progressBar1.Value = 100;
Thread.Sleep(300);
uninstalling = false;
Finish fi = new Finish();
fi.finishBtn.Click += new EventHandler(finishBtn_Click);
this.stepPanel.Controls.RemoveAt(0);
this.stepPanel.Controls.Add(fi);
ui.Dispose();
}