多项选择题
A. Add the OnClick event handler for the Login button to the code used in the custom user control.
B. Add the OnClick event handler for the Login button to the code used in the Web Form where the control is added.
C. In the Page_Load method of the Web Form, add a code segment to set the visibility of the TextBox and Button controls where the control is added.
D. In the Page_Load method of the custom user control, add a code segment to set the visibility of the TextBox and Button controls.
单项选择题 You create an application. The application processes hundreds of XML documents per minute. The XML documents are validated against inline schemas.You need to load XML documents from the file system and read them as quickly as possible. XML comments must be ignored while reading the XML documents. What should you do?（）
单项选择题 You create a Web application to process XML documents. The Web application receives XML document files from several sources, reads them, and stores them in a Microsoft SQL Server database. The Web application parses all incoming data files to ensure that they conform to an XML schema. You need to find all validation errors in the XML document. What should you do?（）
单项选择题 You are transferring records from one database to another. You need to decide whether you can use the SqlBulkCopy class to transfer the records. What should you do?（）