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？（）

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

单项选择题You create a Microsoft ASP.NET application by using the Microsoft .NET Framework version 3.5. You create a class that contains the following code segment：   01 public object GetCachedProducts（sqlConnection conn） {   02   03   if （Cache[ products ] == null） {   04     SqlCommand cmd = new SqlCommand（   05        SELECT * FROM Products ， conn）；   07     conn.Open（）；   08     Cache.Insert（ products ， GetData（cmd））；   09     conn.Close（）；   10   }   11   return Cache[ products ]；   12 }   13   14 public object GetData（SqlCommand prodCmd） {   15   16 }    Each time a Web form has to access a list of products， the GetCachedProducts method is called to provide this list from the Cache object.  You need to ensure that the list of products is always available in the Cache object.  Which code segment should you insert at line 15？ （）

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 add a Web form that contains the following code fragment：   <asp：GridView ID= gvProducts  runat= server    AllowSorting= True  DataSourceID= Products > < asp：GridView>   <asp：ObjectDataSource ID= Products  runat= server    SelectMethod= GetData  TypeName= DAL   > < asp：ObjectDataSource>    You write the following code segment for the GetData method of the DAL class：   01 public object GetData（） {   02   SqlConnection cnn = new SqlConnection（ ）   03   string strQuery =  SELECT * FROM Products ；   04   05 }    You need to ensure that the user can use the sorting functionality of the gvProducts GridView control.  Which code segment should you insert at line 04？（）

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