The DevExpress ASP.NET Tree List (ASPxTreeList) provides support for right-to-left languages such as Arabic and Hebrew, allowing you to create international web pages with right-to-left text, as well as the mirroring of UI elements.
Switch the ASPxTreeList to a right-to-left display by enabling a single property – RightToLeft. When this property is set to true, the text flows from right-to-left, and the layout of most UI elements is reversed.
If you need to apply right-to-left representation to all DevExpress web controls within your web application, you can enable a special configuration option in the web.config file instead of switching the RightToLeft property of each control: the rightToLeft option. This option can be accessed within the settings group of the devExpress section in the web.config file.