You create a Microsoft ASP.NET application by using the Microsoft .NET Framework version 3.5. You write the following code fragment:  
<asp:ScriptManager ID="ScriptManager1" runat="server" />  
<asp:UpdatePanel ID="updateLabels" runat="server" UpdateMode="Conditional">  
<ContentTemplate>  
<asp:Label ID="Label1" runat="server" />  
<asp:Label ID="Label2" runat="server" />  
<asp:Button ID="btnSubmit" runat="server" Text="Submit"   onclick="btnSubmit_Click" />  </ContentTemplate>  
</asp:UpdatePanel>  
<asp:Label id="Label3" runat="server" />   
You need to ensure that when you click the btnSubmit Button control, each Label control value is asynchronously updatable. 
Which code segment 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 plan to add a custom parameter in the SqlDataSource control. You write the following code fragment：   <asp：SqlDataSource ID= SqlDataSource1  runat= server    InsertCommand= INSERT INTO [Employee] （[Field1]， [Field2]， [PostedDate]）    VALUES （@Field1， @Field2， @PostedDate） >  <InsertParameters>   <asp：Parameter Name= Field1   >   <asp：Parameter Name= Field2   >   <custom：DayParameter Name= PostedDate   >  < InsertParameters>   < asp：SqlDataSource>    You write the following code segment to create a custom parameter class：   public class DayParameter ： Parameter { } You need to ensure that the custom parameter returns the current date and time. Which code segment should you add to the DayParameter class？ （）

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 Microsoft Windows Communication Foundation （WCF） service that exposes the following service contract：   01 [ServiceContract]   02 public interface IBlogService   03 {   04   [OperationContract]   05   [WebGet（ResponseFormat=WebMessageFormat.Xml）]   06   Rss20FeedFormatter GetBlog（）；   07 } You configure the WCF service to use the WebHttpBinding class， and to be exposed at the following URL：   http： www.contoso.com BlogService    You need to store the result of the GetBlog operation in an XmlDocument variable named xmlBlog in a Web form.  Which code segment 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. The application consumes a Microsoft Windows Communication Foundation （WCF） service. The WCF service exposes the following method：   [WebInvoke]  string UpdateCustomerDetails（string custID）；    The application hosts the WCF service by using the following code segment：   WebServiceHost host = new WebServiceHost（typeof（CService）， new  Uri（ http： win ））；   ServiceEndpoint ep = host.AddServiceEndpoint（typeof（ICService），    new WebHttpBinding（），  ）；    You need to invoke the UpdateCustomerDetails method.  Which code segment 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 Web form that contains the following code fragment：   <asp：TextBox runat= server  ID= txtSearch   >   <asp：Button runat= server  ID= btnSearch Text= Search  OnClick= btnSearch_Click   >   <asp：GridView runat= server  ID= gridCities   >    You write the following code segment in the code-behind file：   01 protected void Page_Load（object sender， EventArgs e）   02 {   03   DataSet objDS = new DataSet（）；   04   SqlDataAdapter objDA = new SqlDataAdapter（objCmd）；   05   objDA.Fill（objDS）；   06   gridCities.DataSource = objDs；   07   gridCities.DataBind（）；   08   Session[ ds ] = objDS；   09 }   10 protected void btnSearch_Click（object sender， EventArgs e）   11 {   12   13 }    You need to ensure that when the btnSearch Button control is clicked， the records in the gridCities GridView control are filtered by using the value of the txtSearch TextBox. Which code segment you should insert at line 12？（）

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 segment in the code-behind file to create a Web form：   01 string strQuery =  select * from Products；    02   +  select * from Categories ；   03 SqlCommand cmd = new SqlCommand（strQuery， cnn）；   04 cnn.Open（）；   05 SqlDataReader rdr = cmd.ExecuteReader（）；   06   07 rdr.Close（）；   08 cnn.Close（）；    You need to ensure that the gvProducts and gvCategories GridView controls display the data that is contained in the following two database tables： the Products database table the Categories database table   Which code segment should you insert at line 06？（）

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