protected override void OnControlRemoved(ControlEventArgs e)
 {
     base.OnControlRemoved(e);
     if (_previewHandler != null)
     {
         _previewHandler.Unload();
         _previewHandler = null;
     }
 }

 protected override void OnControlAdded(ControlEventArgs e)
 {
     var tabPage = e.Control as TabPage;
     if (tabPage != null)
         tabPage.BackColor = Color.White;
     base.OnControlAdded(e);
 }

 void layoutControlUC_ControlAdded(object sender, ControlEventArgs e)
 {
     if (e.Control is IMainView)
     {
         (e.Control as IMainView).InitializeControls();
     }
 }

        private void pAccounts_ControlRemoved(object sender, ControlEventArgs e)
        {
            System.Windows.Forms.Control.ControlCollection allAccounts = pAccounts.Controls;

            foreach (Control control in allAccounts)
            {
                ((AccountListItem)control).cbTransferToAccount.Items.Clear();
                ((AccountListItem)control).cbTransferToAccount.Items.Add("");
            }

            int position = 0;

            foreach (Control control in allAccounts)
            {
                AccountListItem accountDetailsControl = (AccountListItem)control;
                control.Location = new Point(0, position);
                foreach (Control control1 in allAccounts)
                {
                    AccountListItem accountDetailsControl1 = (AccountListItem)control1;
                    if (!accountDetailsControl1.Equals(accountDetailsControl))
                    {
                        accountDetailsControl1.Invoke((Action)(delegate
                        {
                            accountDetailsControl1.cbTransferToAccount.Items.Add(accountDetailsControl.Account.Login);
                        }));
                        accountDetailsControl1.Refresh();
                    }
                }
                position += 22;
            }
        }

 protected override void OnControlAdded(ControlEventArgs e) {
     base.OnControlAdded(e);
     if(e.Control is UserControl) {
         AcceptButton = Find(e.Control, (btn) => btn.Text == "OK");
         CancelButton = Find(e.Control, (btn) => btn.Text == "Cancel");
     }
 }

        protected override void OnControlRemoved(ControlEventArgs e)
        {
            if (current.Equals(e.Control.Name))
                current = String.Empty; 

            base.OnControlRemoved(e);
        }

        protected override void OnControlAdded(ControlEventArgs e)
        {
            base.OnControlAdded(e);

            if (!this.DesignMode)
            {
                if (e.Control != null)
                {
                    Control c = e.Control;
                    if (!(c is IHighlightControl))
                    {
                        //throw new Exception("Control needs to be an IHighlightControl");
                    }

                    c.Click += new EventHandler(c_Click);
                    if (c is IHighlightControl)
                    {
                        c.MouseMove += new MouseEventHandler(c_MouseMove);
                        c.MouseLeave += new EventHandler(c_MouseLeave);
                    }

                    int index = this.Controls.IndexOf(c);
                    Size s = c.Size;
                    c.Location = new Point(0, (s.Height * index) + (Offset.Height * index));
                }
            }
        }

        private void TabPage_ControlAdded(object sender, ControlEventArgs e)
        {

            TabPage tab = sender as TabPage;
            RaiseLoadedEvent(tab);

        }

 protected override void OnControlRemoved(ControlEventArgs e)
 {
     base.OnControlRemoved(e);
     if (isAccept)
     {
         PLMessageBoxExt.ShowNotificationMessage("Để nhận được kết quả sau khi cài bổ trợ.\nVui lòng khởi động lại chương trình.", true);
     }
 }

		protected override void OnControlAdded(ControlEventArgs e)
		{
			base.OnControlAdded(e);
			if (Tools.IsRunningOnMono)
			{
				ApplyMonoStyle(e.Control);
			}
		}

 private void mainTabs_ControlRemoved(object sender, ControlEventArgs e)
 {
     if (e.Control is TabPage)
     {
         TabPage tabPage = e.Control as TabPage;
         tabPage.ControlAdded -= TabPage_ControlAdded;
     }
 }

 protected override void OnControlAdded(ControlEventArgs e)
 {
     base.OnControlAdded(e);
     NoBorderTabPage page = e.Control as NoBorderTabPage;
     if (page != null && !tabs.TabPages.Contains(page.Page)) {
         pages.Add(page);
     }
 }

		protected override void OnControlAdded(ControlEventArgs e) {

			if (e.Control is ControlPanelTaskLink) {
				(e.Control as ControlPanelTaskLink).NormalColor = _renderer.GetColor(ColorProperty.TextColor);
			}
			
			base.OnControlAdded(e);
		}

        protected override void OnControlAdded(ControlEventArgs e)
        {
            e.Control.Dock = DockStyle.Fill;
            e.Control.Visible = false;
            //Current = e.Control.Name;   

            base.OnControlAdded(e);
        }

        protected override void OnControlAdded(ControlEventArgs e)
        {
            base.OnControlAdded(e);

            var radioButton = e.Control as RadioButton;
            if (radioButton != null)
                radioButton.CheckedChanged += radioButton_CheckedChanged;
        }

        /// <summary>
        /// Handler for drop event.
        /// </summary>
        /// <param name="e"></param>
        protected override void OnControlAdded(ControlEventArgs e)
        {
            this.SetFont(e.Control, this._controlsFont);

            if (e.Control is NotenizerAdvancedLabel)
                (e.Control as NotenizerAdvancedLabel).ResetToolTip();

            base.OnControlAdded(e);
        }

 protected override void OnControlRemoved(ControlEventArgs e)
 {
     LockScreenWidget widget = e.Control as LockScreenWidget;
     if(widget != null)
     {
         widget.LockScreen = null;
     }
     base.OnControlRemoved(e);
 }

 /// <summary>
 /// 
 /// </summary>
 /// <param name="e"></param>
 protected override void OnControlAdded(ControlEventArgs e)
 {
     try
     {
         e.Control.BackColor = System.Drawing.Color.Transparent;
     }
     catch { }
     base.OnControlAdded(e);
 }

        protected override void OnControlAdded(ControlEventArgs e)
        {
            base.OnControlAdded(e);

            e.Control.GotFocus += new EventHandler(Control_GotFocus);
            e.Control.LostFocus += new EventHandler(Control_LostFocus);
            e.Control.MouseEnter += new EventHandler(Control_MouseEnter);
            e.Control.MouseLeave += new EventHandler(Control_MouseLeave);
        }

        private void mainTabs_ControlAdded(object sender, ControlEventArgs e)
        {
            if (e.Control is TabPage)
            {
                TabPage tabPage = e.Control as TabPage;
                tabPage.ControlAdded += TabPage_ControlAdded;

                RaiseLoadedEvent(tabPage);
            }
        }