CommandBarDropDownButton items show up in a wrong position

[Davut]

   Hi Telerik Team,

i begin to developing a telerik UI by using c#. i added a CommandBarDropDownButton for language selection (English & Arabic). When i set currentculture as arabic and RightToLeft to Yes, CommandBarDropDownButton items, are onthe right side of screen, show up shifted position, in a wrong position. i attached the screenshots for clarifying problem. 

Here is my code:

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Globalization;
using System.Threading;
using System.Windows.Forms;
using Telerik.WinControls;
using Telerik.WinControls.UI;

namespace TelerikWinFormsApp2
{
    public partial class Form1 : RadForm
    {
        private static RightToLeft right2Left = RightToLeft.No;
        private readonly object _locker = new object();

        public static CultureInfo CurrentCulture { get; set; }

        private RightToLeft Right2Left
        {
            get { return right2Left; }
            set {
                if (!(right2Left == value))
                {
                    lock(_locker){
                        right2Left = value;
                        CultureChangeFunc();
                    }
                }
            }
        }

        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            InitializeToolbar();
        }

        private void InitializeToolbar()
        {
            bseLayout.Grip.Visibility = ElementVisibility.Collapsed;
            bseActions1.Grip.Visibility = ElementVisibility.Collapsed;
            bseLanguage.Grip.Visibility = ElementVisibility.Collapsed;

            bseLanguage.DesiredLocation = new PointF(10000, 0);

            this.commandBarDropDownButton2.Image = Image.FromFile("icons\\32x32\\icon_list.png");
            this.commandBarDropDownButton3.Image = Image.FromFile("icons\\32x32\\icon_settings.png");
            this.commandBarDropDownButton4.Image = Image.FromFile("icons\\32x32\\icon_lang.png");
            this.commandBarButton7.Image = Image.FromFile("icons\\32x32\\icon_info.png");
            this.commandBarButton4.Image = Image.FromFile("icons\\32x32\\icon_help.png");

        }

        private void rmiLanguage_Click(object sender, EventArgs e)
        {
            var selectedItem = (RadMenuItem)sender;
            if (selectedItem.Tag == null)
                return;

            try
            {
                if (selectedItem.Tag.Equals("rmiEnglish"))
                {
                    CurrentCulture = new CultureInfo("en-US");
                    Right2Left = RightToLeft.No;
                }
                else if (selectedItem.Tag.Equals("rmiArabic"))
                {
                    CurrentCulture = new CultureInfo("ar-SA");
                    Right2Left = RightToLeft.Yes;
                }
                else
                {
                    return;
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show("Change Language Error : "+ ex.Message.ToString());
            }
        }

        private void CultureChangeFunc()
        {
            try
            {
                Thread.CurrentThread.CurrentCulture = CurrentCulture;
                Thread.CurrentThread.CurrentUICulture = CurrentCulture;
                RightToLeft = Thread.CurrentThread.CurrentCulture.TextInfo.IsRightToLeft ? RightToLeft.Yes : RightToLeft.No;
            }
            catch (Exception ex)
            {
                MessageBox.Show("Change Language Error : ", ex.Message.ToString());
            }
        }



    }
}

[Dimitar]

Hi ,

Thank you for writing.

I was able to reproduce the observed issue. I have logged it in our Feedback Portal. I have added a vote for it on your behalf as well. You can track its progress, subscribe for status changes and add your comment to it here. I have also updated your Telerik Points.

To workaround this you should set the location of the dropdown like this:

commandBarDropDownButton3.DropDownMenu.PopupOpening += DropDownMenu_PopupOpening;


private void DropDownMenu_PopupOpening(object sender, CancelEventArgs args)
{
    var e = args as RadPopupOpeningEventArgs;
    var ownerElement = (sender as RadDropDownMenu).OwnerElement;
    var loc = ownerElement.ElementTree.Control.PointToScreen(ownerElement.ControlBoundingRectangle.Location);
    loc.Y += ownerElement.ControlBoundingRectangle.Height;
    loc.X -=  ((sender as RadDropDownMenu).Width - ownerElement.ControlBoundingRectangle.Width);
    e.CustomLocation = loc;

}

Should you have any other questions do not hesitate to ask.

Regards,
Dimitar
Telerik by Progress