Silverlight accesses IIS host WCF via httpbinding

Silverlight's access to IIS host WCF via httpbiding is the most common and most commonly used in Silverlight and WCF communications, and is demonstrated with a very simple example.

Project structure:

Brief description of Project structure:

Assembly name	References that need to be added	Brief description
Lxcontracts	System.Runtime.Serialization System.ServiceModel	For storing operational contracts and data contracts
Lxservices	Lxcontracts[Project]	Service, implementation of operation contract
Wcfhost.web	lxcontracts[projects] and lxservices[projects]	Sites that use SVC file Publishing services
Silverlightdemo		Silverlight program, calling WCF Service

Note: When you build a Silverlight program, you do not need to host the Web site to create a single Silverlight program, because the Silverlight and WCF services are not placed under the same site to demonstrate cross-domain problems.

Code implementation:

Class Library Lxcontracts: (including data contract Student.cs and operation contract IStudent.cs)

Student.cs Code

   
   

	  
    
    
 
     
 
      
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UsingSystem;UsingSystem.Collections.Generic;UsingSystem.Linq;UsingSystem.Text;UsingSystem.ServiceModel;UsingSystem.Runtime.Serialization; Namespacelxcontracts {[DataContract]public classStudent {<summary>///Student Number</summary>[DataMember]public int Stuid {get; set; } <summary>///Student Name</summary>[DataMember]public string Stuname {get; set; } <summary>///Your class</summary>[DataMember]public string ClassName {get; set; } <summary>///Contact Phone</summary>[DataMember]public string Telphonenum {get; set; } } }
 
 
     
 
    
   
   
Student.cs Code

 
    
    

	  
  
     
     
 
      
 
       
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Using System;
 Using System.Collections.Generic;
 Using system.linq;
 Using system.text;
 Using System.Runtime.Serialization;
 Using system.servicemodel;

 Namespace lxcontracts
{
    [ServiceContract]
    public interface istudent
    {
        [ OperationContract]
        List<Student> getstudent ();
    }
 
      
 
     
 
    
    
Class Library Lxservices: (class library includes a mock Get database collection class StudentList.cs and service class StudentService.cs)

StudentList.cs

   
   

	  
    
    
 
     
 
      
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Using System;
 Using System.Collections.Generic;
 Using system.linq;
 Using system.text;
 Using lxcontracts;

 Namespace lxservices
{
    public class studentlist:list<student>
    {
         Public studentlist ()
        {
            this. ADD (New Student () {stuid = 1, stuname = "Xiaoming", ClassName = "Computer Class", Telphonenum = "123456" });
             This. ADD (New Student () {stuid = 2, Stuname = "Little Red", ClassName = "Computer class two", Telphonenum = "234567" });
             This. ADD (New Student () {stuid = 2, Stuname = "Xiaolan", ClassName = "Computer class three", Telphonenum = "890123" });
        }
 
     
 
    
   
   
Studentservice Code

   
   
 
    
    
 
     
 
      
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 using  System;  Using  System.Collections.Generic;  Using  System.Linq; 

Using  System.Text;

 using  lxcontracts;  namespace  lxservices { public class  studentservice:istudent { public List <student>  getstudent () {// The actual situation should be to read from the database //This example manually generate a Student
            List studentlist liststuent = new  studentlist ();
         return  liststuent; }
    }
}
 
 
     
 
    

   
   
site Wcfhost.web

Site Wcfhost.web, this is a asp.net empty Web application.

1. Right-click "Wcfhost.web"-"Add"-"New Item"-"WCF Service", named "Studentsrv.svc". As shown in figure:

Delete the "StudentSrv.svc.cs" file and the "IStudentSrv.cs" file in the project. Right-click the Studentsrv.svc file, select View markup, and modify the code to:

<%@ ServiceHost language= "C #" service= "Lxservices.studentservice"%>

2, modify the Webconfig file, the code is as follows:

Webconfig

   
   

	  
    
    
 
     
 
      
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<?xml version= "1.0" encoding= "Utf-8"?>
<configuration>
  <system.web>
    < Compilation debug= "True" targetframework= "4.0"/>
  </system.web>
  <system.serviceModel>
    <behaviors>
      <serviceBehaviors>
        <behavior name= "Lxbehavior" >
          <servicemetadata Httpgetenabled= "true"/>
          <servicedebug includeexceptiondetailinfaults= "false"/>
        </behavior >
      </serviceBehaviors>
    </behaviors>
    <services>
      <service name= " Lxservices.studentservice "behaviorconfiguration=" Lxbehavior ">
        <endpoint address=" "binding=" BasicHttpBinding "contract=" lxcontracts.istudent "/>
      </service>
    </services>
    <!- -Turn off asp.net compatibility mode-->
    <servicehostingenvironment aspnetcompatibilityenabled= "false"/>
  </ System.servicemodel>
</configuration>
 
 
     
 
    
   
   
Note: The address in endpoint is empty: Because the location of the Svc file is the address of the metadata publication.

3, right click the "studentsrv.svc" file, in the "Browser View", showing the following figure, indicating that the service has been deployed, I use the port is 9090:

To invoke in Silverlight:

Silverlight invocation WCF is simple, adding a "service reference" directly to "Silverlightdemo", and the "servicereferences.clientconfig" configuration file is automatically generated in the Silverlight project. Of course, can also use the way the code calls, but I am lazy:).

1. Add WCF to the Silverlight program:

"Right-click"-"Siverlightdemo"-"Add Service Reference"-"Enter service Address" (mine is http://localhost:9090/WCF/StudentSrv.svc)--click "Go" and you will find a service, Named "WCF." Studentsrv ", click" OK "

2. Invoke WCF in Silverlight:

MainPage.xaml to add the DataGrid control, the XAML code is as follows:

MainPage.xaml Code

   
   

	  
    
    
 
     
 
      
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<sdk:datagrid x:name= "dgstudnet" grid.row= "0" autogeneratecolumns= "False" >
            <sdk:DataGrid.Columns>
                <sdk:datagridtextcolumn header= "student number" width= "binding=" {Binding stuid} "/> <sdk:d
                Atagridtextcolumn header= "Student name" width= "binding=" {Binding stuname} "/> <sdk:datagridtextcolumn
                "In class" Width= "binding=" "{Binding ClassName}"/> <sdk:datagridtextcolumn header=
                "phone number" width= "100" binding= "{Binding telphonenum}"/>
            </sdk:DataGrid.Columns>
        </sdk:DataGrid>
 
     
 
    
   
   
MainPage.cs Code

   
   

	  
    
    
 
     
 
      
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public partial classMainpage:usercontrol {ObservableCollection<Student>liststudent; PublicMainPage () {InitializeComponent (); Liststudent= new Observablecollection<student>(); This. Loaded + = newRoutedeventhandler (mainpage_loaded); } void Mainpage_loaded (Objectsender, RoutedEventArgs e) {studentclient proxyclient= newstudentclient (); Proxyclient.getstudentasync (); Proxyclient.getstudentcompleted+ + new eventhandler<getstudentcompletedeventargs>(proxyclient_getstudentcompleted); } void Proxyclient_getstudentcompleted (Objectsender, Getstudentcompletedeventargs e) { if (E.error = null) {liststudent=E.result; This.dgStudnet.ItemsSource =liststudent; } } }
 
        
 
       
 
       
 
        
 
          
        
 
       
 
 
     
 
    
   
   
Run Result:

Setting "Silverlightdemo" as the startup project, running, produces the following exception:

This is because the project was built at that time without putting the Silverlight program and WCF services on the same site, so you need to place a Cross-domain file in the site root of the release WCF: ClientAccessPolicy.xml

ClientAccessPolicy.xml

<?xml version= "1.0" encoding= "Utf-8"?>
<access-policy>
  <cross-domain-access>
    < policy>
      <allow-from http-request-headers= "SOAPAction" >
        <domain uri= "*"/>
      </ allow-from>
      <grant-to>
        <resource path= "/" include-subpaths= "true"/>
      </grant-to>
    </policy>
  </cross-domain-access>
</access-policy>

Run again, as shown in the following figure:

At this point, Silverlight's demo of WCF accessing the IIS host through httbbingding we'll be here.