BannerTextProvider helps to customize the editor control appearance. You can also change the banner text color, Mode and etc.
BannerTextProvider includes the following modes.
FocusMode: The banner text disappears when the control gets focus.
EditMode: The banner text disappears only when the control is in Edit Mode or when the associated textbox is not empty.
Please check below sample for your reference.
Sample link: http://www.syncfusion.com/downloads/support/directtrac/general/ze/BannerTextProvider-1042639859
UG link: http://help.syncfusion.com/windowsforms/bannertextprovider/overview
Could you please share us, what difficulty you are facing with Syncfusion BannerText Component? That will be helpful for us to analyze and provide solution.