单项选择题 You create a Web Form. The Web Form allows users to calculate values and display the results in a label named lblResults. You need to capture all unhandled exceptions on the Web Form through the Error event. The Error event must capture each unhandled exception and display it on the Web Form. Which code segment should you use?（）

单项选择题 You create a Web Form. The Web Form allows users to calculate values and display the results in a label named lblResults. You need to capture all unhandled exceptions on the Web Form through the Error event. The Error event must capture each unhandled exception and display it on the Web Form. Which code segment should you use?（）

单项选择题 Your Web site uses custom Themes. Your Web site must support additional Themes based on the users company name. The company name is set when a user logs on to the Web site. The companys Theme name is stored in a variable named ThemeName. You need to use this variable to dynamically set the Web sites Theme. What should you do?（）