Using the code bellow which add a radio button to a RadToggleButton. Whenever i click the button and not the radio button. The radio button automatically toggles on as well. But if you change RadToggleButton to a RadButton then it works. It also hapens with RadCheckBoxElement as well.

            RadToggleButton button = new RadToggleButton();
            button.Text = "Test";
            
            RadRadioButtonElement e = new RadRadioButtonElement();
            e.ToggleStateChanged += e_ToggleStateChanged;
            e.CheckStateChanged += e_CheckStateChanged;
            e.Margin = new System.Windows.Forms.Padding(button.Width-18, 0, 0, 0);
            button.ButtonElement.Children.Add(e);
            button.ToggleStateChanged += button_ToggleStateChanged;
            Controls.Add(button);

 

Hi Hugues,

Thank you for writing.

In this case the only the visual state of the element is changed by the theme. As you can see the ToggleStateChanged event is not fired unless the radio button is clicked. So to avoid this you can use RadHostItem and add RadRadioButton:

I hope this helps. Should you have any other questions do not hesitate to ask.
Regards,
Dimitar
Telerik