Radtoggleswitch not rendering as designed

Hello, Shuvrangshu,

According to the provided information, it is not clear what are the changes that you made at design time to achieve the rounded shape for RadToggleSwitch. However, if you want to achieve this design at run time, I can suggest you to use the following code snippet:  

        public RadForm1()
        {
            InitializeComponent();

            this.radToggleSwitch1.ToggleSwitchElement.Shape = new RoundRectShape(10);
            this.radToggleSwitch1.ToggleSwitchElement.Thumb.Shape = new RoundRectShape(10);
        }

I hope this information helps. If you need any further assistance please don't hesitate to contact me. 

Regards,
Dess | Tech Support Engineer, Sr.
Progress Telerik