DXErrorProvider.SetError Method

Name	Parameters	Description
SetError(Control, String, ErrorType)	control, errorText, errorType	Sets an error icon next to a control. When a user hovers over this icon, a tooltip with an error message appears on-screen.
SetError(Control, String)	control, errorText	Sets the default error icon next to a control. When a user hovers over this icon, a tooltip with an error message appears on-screen.