Right-to-left support
You can present the content of your RadPageView instance in a right-to-left direction by setting the RightToLeft property to Yes:
this.radCommandBar1.RightToLeft = RightToLeft.Yes;
Me.RadCommandBar1.RightToLeft = Windows.Forms.RightToLeft.Yes
Please note that this feature reorders not only the system buttons, but it also changes the order of your custom items where necessary: