单项选择题
	A.Derive from the Control class.
	B.Derive from the UserControl class.
	C.Derive from the FrameworkElement class.
	D.Derive from the ContainerControl class.
单项选择题 YouarecreatingaWindowsFormsapplicationbyusingthe.NETFramework3.5.Youplantodevelopanewcontrolfortheapplication.YouneedtoensurethatthecontrolextendstheDataGridViewcontrolbyallowingthecellstocontainmulticoloredtext.Whatshouldyoudo?()
单项选择题 YouarecreatingaWindowsFormsapplicationbyusingthe.NETFramework3.5.Youplantodevelopanewcontrolfortheapplication.ThecontrolwillhavethesamepropertiesasaTextBoxcontrol.Youneedtoensurethatthecontrolhasatransparentbackgroundwhenitispaintedonform.Youwanttoachievethisgoalbyusingtheminimumamountofdevelopmenteffort.Whatshouldyoudo?()
多项选择题 YouarecreatingaWindowsFormsApplicationbyusingthe.NETFramework3.5.Yourapplciationwillbeusedbyagovernmentdepertment.Youneedtoensurethattheapplicationmeets"accessibilty"requirements.Whichthreeactionsshouldyouperform?()