You create a Microsoft ASP.NET application by using the Microsoft .NET Framework version 3.5. The application contains a DataSourceControl named CategoriesDataSource that is bound to a Microsoft SQL Server 2005 table. The CategoryName column is the primary key of the table. You write the following code fragment in a FormView control：  
01 <tr>  
02   <td align="right"><b>Category：</b></td>  
03   <td><asp：DropDownList ID="InsertCategoryDropDownList"  
04 ► 
05     DataSourceID="CategoriesDataSource"  
06     DataTextField="CategoryName"  
07     DataValueField="CategoryID"  
08     RunAt="Server" />  
09   </td>  
10 </tr>   
You need to ensure that the changes made to the CategoryID field can be written to the database. 
Which code fragment should you insert at line 04？（）

单项选择题You create a Microsoft ASP.NET application by using the Microsoft .NET Framework version 3.5. ou create a FormView control to access the results of a query.    The query contains the following fields：  EmployeID    FirstName  LastName   The user must be able to view and update the FirstName field.  You need to define the control definition for the FirstName field in the FormView control. Which code fragment should you use？（）

A.A
B.B
C.C
D.D

单项选择题You create a Microsoft ASP.NET application by using the Microsoft .NET Framework version 3.5. You create a file named movies.xml that contains the following code fragment：   <Movies>   <Movie ID= 1  Name= Movie1  Year= 2006 >   <Desc Value= Movie desc >   < Movie>   <Movie ID= 2  Name= Movie2  Year= 2007 >   <Desc Value= Movie desc >   < Movie>   <Movie ID= 3  Name= Movie3  Year= 2008 >   <Desc Value= Movie desc > < Movie>  < Movies>   You add a Web form to the application.  You write the following code segment in the Web form：   01 <form runat= server >  02   <asp：xmldatasource   03     id= XmlDataSource1    04     runat= server    05     datafile= movies.xml   >   06   07 < form>    You need to implement the XmlDataSource control to display the XML data in a TreeView control. Which code segment should you insert at line 06？（）

A.A
B.B
C.C
D.D

单项选择题You create a Microsoft ASP.NET application by using the Microsoft .NET Framework version 3.5. The application consumes an ASMX Web service. The Web service is hosted at the following URL： http： www.contoso.com TemperatureService Convert.asmx    You need to ensure that the client computers can communicate with the service as part of the <system.serviceModel> configuration.  Which code fragment should you use？（）

A.A
B.B
C.C
D.D

单项选择题You create a Microsoft ASP.NET application by using the Microsoft .NET Framework version 3.5. You write the following code fragment：   01 <asp：RequiredFieldValidator   02   ID= rfValidator1  runat= server    03   Display= Dynamic  ControlToValidate= TextBox1    04   05 >   06   07 < asp：RequiredFieldValidator>   08   09 <asp：ValidationSummary DisplayMode= List    10   ID= ValidationSummary1  runat= server   >   You need to ensure that the error message displayed in the validation control is also displayed in the ValidationSummary list.  What should you do？（）

A.A
B.B
C.C
D.D

单项选择题You create a Microsoft ASP.NET application by using the Microsoft .NET Framework version 3.5. You create a custom-templated server control.  You need to ensure that the child controls of the server control are uniquely identified within the control hierarchy of the page.  Which interface should you implement？（）

A.the ITemplatable interface 
B.the INamingContainer interface 
C.the IRequiresSessionState interface
D.the IPostBackDataHandler interface