单项选择题 You are developing a Web control. The Web control captures user address information in a Web application. You create a class named AddressControl that inherits from CompositeControl. This control consists of child controls. You need to ensure that the child controls are properly output to the browser. Developers using your control must be able to set the appropriate text for labels. In addition, they must be able to pull user address information from the associated text boxes during postback. What should you do? （）

单项选择题 Exhibit: You develop a Web control to manage credit card information. The Web control is shown in the exhibit. You register the control on the Web Form by using the following code segment. <%@ Register Assembly="CreditCardUserDetails" Namespace="CreditCardUserDetails" TagPrefix="cc1" %> You need to declare the control on the Web Form. Which code segment should you use?（）

单项选择题 Exhibit You create a Web Form for the acceptance of donations. Users type donation amounts by using a TextBox control named txtAmount. The donation amount must be between 10 dollars and 10,000 dollars. You add the following RequiredFieldValidator and RangeValidator. During testing you learn that when users fail to enter values before submitting the Web Form to the server, the message "Please enter a value" appears, as shown in the exhibit. You need to ensure that the message appears immediately following the txtAmount TextBox control without extra spaces. What should you do? （）