public void ShowSurvey(object sender, EventArgs e)
 {
     try
     {
         survey = new ControlSurvey();
         panelContainer.Controls.Clear();
         survey.Dock = DockStyle.Fill;
         panelContainer.Controls.Add(survey);
     }
     catch (Exception ex)
     {
         MessageBox.Show(ex.ToString());
     }
 }
 private void btnMenuWork_Click(object sender, EventArgs e)
 {
     btnMenuWork.Enabled    = false;
     btnMenuLicense.Enabled = true;
     btnMenuReport.Enabled  = true;
     panelLeft.Controls.Clear();
     panelContainer.Controls.Clear();
     cwl         = new ControlWorkMenuLeft();
     survey      = new ControlSurvey();
     cwl.Dock    = DockStyle.Fill;
     survey.Dock = DockStyle.Fill;
     panelLeft.Controls.Add(cwl);
     panelContainer.Controls.Add(survey);
     GC.Collect();
 }