In this article we will learn about WCF services with an example.
- First create a class library and name it TestService. (Execute VisualStudio using "Run as Administrator".)
- Next add one WCF Service class to the class library.
- It will create TestService.cs and one interface class ITestService.cs.
Here I am writing a string that we want in the output of the service.
[ServiceContract]
public interface ITestService
{
[OperationContract]
string GetMessage(string Name,string Email,string Address);
}
Then we need to change the TestService.cs (because Testservice.cs inherits ITestService.cs).
public class TestService : ITestService
{
public string GetMessage(string Name,string Email,string Address)
{
return "Hello" + Name + "Email" + Email + "Address" + Address;
}
}
- Next we need to add a Console Application to the solution, name it TestServicehost.
- Next add a reference for System.Servicemodel to the project.
- Next add the TestService project as a refernce.
Next modify the Main method as in the following:
static void Main()
{
using (ServiceHost host = new ServiceHost(typeof(TestService.TestService)))
{
host.Open();
Console.WriteLine("Host strated @" + DateTime.Now.ToString());
Console.ReadLine();
}
}
Next add an Application Configuration file to the project. Provide the following code for it:
<system.serviceModel>
<services>
<service name="TestService.TestService" behaviorConfiguration="mexBehavior">
<endpoint address="HelloService" binding="basicHttpBinding" contract="TestService.ITestService">
</endpoint>
<endpoint address="mex" binding="mexHttpBinding" contract="IMetadataExchange">
</endpoint>
<host>
<baseAddresses>
<add baseAddress ="http://localhost:8080/"/>
</baseAddresses>
</host>
</service>
</services>
<behaviors>
<serviceBehaviors>
<behavior name="mexBehavior">
<serviceMetadata httpGetEnabled="true"/>
</behavior>
</serviceBehaviors>
</behaviors>
</system.serviceModel>
Next, set TestServiceHost as the start up project. Then a command prompt window will open.
- Next open Visual Studio and again use "Run as administrator".
- Create New->Project->Web->ASP.NET Empty Web application.
- Add System.Servicemodel as a Refernce to project.
- Add a service refernce to the project, it will open a window.
![service Refernce to project]()
In the address bar, enter the URL (as you gave in the app.config). Click on go, it will show the running webservice.
Click on the web service and provide a name and then click OK.
- Next add a Webform to the project and name it Student.aspx.
- Enter the following code.
<form id="form1" runat="server">
<table>
<tr>
<td>
<asp:Label ID="lblName" runat="server" Text="Name"></asp:Label>
</td>
<td>
<asp:TextBox ID="txtName" runat="server"></asp:TextBox>
</td>
</tr>
<tr>
<td>
<asp:Label ID="lblMail" runat="server" Text="Email"></asp:Label>
</td>
<td>
<asp:TextBox ID="txtMail" runat="server"></asp:TextBox>
</td>
</tr>
<tr>
<td>
<asp:Label ID="lblAddress" runat="server" Text="Address"></asp:Label>
</td>
<td>
<asp:TextBox ID="txtAddress" runat="server"></asp:TextBox>
</td>
</tr>
<tr>
<td colspan="2">
<asp:Button ID="btnSubmit" runat="server" Text="Submit" OnClick="btnSubmit_Click" />
</td>
</tr>
<tr>
<td>
<asp:Label ID="lblMsg" runat="server"></asp:Label>
</td>
</tr>
</table>
</form>
In the code behind file, in the click event enter the following code.
protected void btnSubmit_Click(object sender, EventArgs e)
{
TestService.TestServiceClient client = new TestService.TestServiceClient("BasicHttpBinding_ITestService");
string Name=txtName.Text;
string Email=txtMail.Text;
string Address=txtAddress.Text;
lblMsg.Text = client.GetMessage(Name, Email, Address);
}
Next, run the project; we will get the result.