Hi all,

some time ago starting from some code I found here, I wrote a method to add a button in a dropdownlist (I have used a label with an image instead of a button), it seems to work fine but if I use it with a dropdownlist that is contained in a RadWizard or RadTreeView page, the button is shown only if that page is the selected page when the form is loaded, but is not shown when I click on a Tab move to the page that contains the dropdownlist.

I usually add call the method in the Load event of the form, but I've tried tu use other events with effects.

This is the method :

        public static void ButtonizeDropDown(RadDropDownList ddlistControl, EventHandler OnClick, out RadLabelElement btnElement) {
            btnElement = null;
            EventHandler onLabelElementClicked = (object s, EventArgs ea) => { ddlistControl.SelectedIndex = -1; };
            if (OnClick != null) onLabelElementClicked = (object s, EventArgs ea) => { OnClick(ddlistControl,ea); };
            ddlistControl.BeginInit();
            RadLabelElement lbl = new RadLabelElement();
            btnElement = lbl;
            lbl.Click += onLabelElementClicked;
            lbl.Margin = new Padding(0, 0, 0, 0);
            lbl.AutoSize = false;
            lbl.Text = "";
            lbl.Tag = ddlistControl;
            lbl.Image = new Bitmap(global::K2O.UI.Properties.Resources.Delete_Thin_BW_UltraLight_12);
            lbl.ImageAlignment = ContentAlignment.MiddleCenter;
            lbl.TextAlignment = ContentAlignment.MiddleCenter;
            lbl.TextImageRelation = TextImageRelation.Overlay;
            lbl.Alignment = ContentAlignment.MiddleCenter;
            ddlistControl.DropDownListElement.EditableElement.ShouldPaint = false;
            RadDropDownTextBoxElement textBoxElement = ddlistControl.DropDownListElement.EditableElement.TextBox;
            RadTextBoxItem textboxitem = textBoxElement.TextBoxItem;
            ddlistControl.DropDownListElement.EditableElement.TextBox.Children.Remove(textboxitem);
           
            lbl.Size = new System.Drawing.Size(textBoxElement.Size.Height, textBoxElement.Size.Height);
            StackLayoutElement stackPanel = new StackLayoutElement();
            stackPanel.Orientation = Orientation.Horizontal;
            stackPanel.Margin = new Padding(0, 0, 0, 0);
            stackPanel.Size = lbl.Size;
            stackPanel.Children.Add(lbl);
            DockLayoutPanel dockPanel = new DockLayoutPanel();
            dockPanel.Size = lbl.Size;
            dockPanel.Children.Add(stackPanel);
            dockPanel.Children.Add(textboxitem);
            DockLayoutPanel.SetDock(textboxitem, Dock.Right);
            DockLayoutPanel.SetDock(stackPanel, Dock.Left);
            ddlistControl.DropDownListElement.EditableElement.TextBox.Children.Add(dockPanel);
            if (ddlistControl.DropDownStyle == RadDropDownStyle.DropDownList) {
                textboxitem.ReadOnly = true;
                ddlistControl.DropDownListElement.EditableElement.TextBox.Visibility = ElementVisibility.Visible;
                ddlistControl.DropDownListElement.EditableElement.TextBox.Enabled = true;
                lbl.Enabled = true;
                lbl.Visibility = ElementVisibility.Visible;
            }
            //Per fare in modo che tutti gli elementi del controllo acquistino lo stesso stato (Enabled/Disabled) del controllo stesso;
            ddlistControl.Enabled = !ddlistControl.Enabled;
            ddlistControl.Invalidate();
            ddlistControl.Enabled = !ddlistControl.Enabled;
            ddlistControl.EndInit();
        }

can you please tell me what I must change to have it work in every page of a RadPageView or RadWizard ?

Thanks

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I have set up event handlers for the clicking of the arrows but what event is fired when the user changes the month drop down on the picker.

My code as it stands is

       public form1()
        {
            InitializeComponent();

            RadDateTimePickerCalendar calendarBehavior = this.dtDOI.DateTimePickerElement.GetCurrentBehavior() as RadDateTimePickerCalendar;
            calendar = calendarBehavior.Calendar as RadCalendar;
            RadCalendarElement calendarElement = calendar.CalendarElement as RadCalendarElement;
            MonthViewElement monthView = calendarBehavior.Calendar.CalendarElement.CalendarVisualElement as MonthViewElement;
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            calendarElement.PreviousButton.Click += new EventHandler(calendar_SelectionChanged);
            calendarElement.FastBackwardButton.Click += new EventHandler(calendar_SelectionChanged);
            calendarElement.FastForwardButton.Click += new EventHandler(calendar_SelectionChanged);
         }

        void calendar_SelectionChanged(object sender, EventArgs e)
        {
            FormatCalendar();
        }

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        {
            RadDateTimePickerCalendar calendarBehavior = this.dtDOI.DateTimePickerElement.GetCurrentBehavior() as RadDateTimePickerCalendar;
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            MonthViewElement monthView = calendarBehavior.Calendar.CalendarElement.CalendarVisualElement as MonthViewElement;
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            foreach (CalendarCellElement cell in monthView.TableElement.Children)
            {
                if (dates.Contains(cell.Date))
                {
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                }
                else
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                }
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        }

If I use   calendar.ElementRender += new RenderElementEventHandler(calender_SelectionChanged); I get stuck in a perpetual loop. 

Or is there a better way of doing things?

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Regards

Erwin

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