单项选择题 You develop a Web application that contains two master pages. You need to dynamically set the master page when a user views pages in the application. What should you do? （）

单项选择题 You develop a Web application that contains two master pages. You need to dynamically set the master page when a user views pages in the application. What should you do?（）

单项选择题 You create a master page named PageBase.master. The master page contains a Label control named lblTitle. You create a content page that references the master page. You need to change the Text property of the master pages lblTitle control from the content page. Which code segment should you use?（）