private void MenuSelectorView_MouseClick(object sender, MouseEventArgs e) { var node = MenuSelectorView.GetNodeAt(e.Location); if (MainLayout.Controls.Count > MainLayoutCount) { MainLayout.Controls.RemoveAt(MainLayoutCount); } if (node != null && node.Text == @"Project management") { try { MainLayout.Controls.Add(pManagement); MainLayout.SetRowSpan(pManagement, 2); } catch (Exception ex) { MessageBox.Show(ex.Message); } } if (node != null && node.Text == @"Activity management") { MainLayout.Controls.Add(aManagement); MainLayout.SetRowSpan(aManagement, 2); } if (node != null && node.Text == @"Hour management") { MainLayout.Controls.Add(hManagement); MainLayout.SetRowSpan(hManagement, 2); } }