单项选择题
A.master.master
B.parent.master
C.this.master
D.unknown
单项选择题 Youhavealogin.ascxcontrolandtodisplayitinaviewwhichmethoduwoulduse（）
单项选择题 YouaredevelopingaAsp.netwebapplicationthtincludesapanelcontrolthathasIDcontentsection.YouneedtoaddatextBoxcontroltothepanelcontrol.（）
单项选择题 Youareperfomingsecuritytestingonanexistingasp.netwebpage.Younoticethatyouareabletoissueunauthorisedpostbackrequeststothepage.Youneedtopreventunauthorisedpostbackrequests.whichpagedirectiveyouuse？（）