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？（）

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？（）

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？（）