if (radToggleButton1.ToggleState == Telerik.WinControls.Enumerations.ToggleState.Off)
Note that positioning the .NET errorProvider icon is not quite customizable, so I were forced to use icon padding in order to position correctly the exclamation mark under the middle of each RadPageViewPage header.
I hope this information helps. Should you have further questions, I would be glad to help.
TRY TELERIK'S NEWEST PRODUCT - EQATEC APPLICATION ANALYTICS for WINFORMS.
Learn what features your users use (or don't use) in your application. Know your audience. Target it better. Develop wisely. Sign up for Free application insights >>