Fetching image using WCF REST service

Objective

This article will give a very simple and basic explanation of, how to fetch an image using WCF REST service.

Step 1

Create a WCF application. To create a new application File -> New -> Web-> WCF Service Application.

Step 2

Remove all the default code created by WCF. Remove code from IService 1 interface and Service1 class. Remove the code from Web.Config also. Open Web.Config and remove System.Servicemodel codes.

Step 3

Right click on Service1.svc select View markup and add below code

<%@ ServiceHost Language="C#" Debug="true" Service="FetchingImageinBrowser.Service1" CodeBehind="Service1.svc.cs" Factory="System.ServiceModel.Activation.WebServiceHostFactory" %>

Step 4

Create contract. Operation contract will return Stream. Stream is in the namespace System.IO. By putting WebGet attribute make operation contract

IService1.cs

using System;

using System.Collections.Generic;

using System.Linq;

using System.Runtime.Serialization;

using System.ServiceModel;

using System.ServiceModel.Web;

using System.Text;

using System.IO ;

namespace FetchingImageinBrowser

{

[ServiceContract]

public interface IService1

{

[OperationContract]

[WebGet(UriTemplate = "GetImage", RequestFormat = WebMessageFormat.Xml, ResponseFormat = WebMessageFormat.Xml, BodyStyle = WebMessageBodyStyle.Bare)]

Stream GetImage();

}

}

Step 5

Implement service. In service class write the below code. Using FileStream open and read the image. Then set outgoing response as image/jpeg using WebOperationContext class.

Service1.svc.cs

using System;

using System.Collections.Generic;

using System.Linq;

using System.Runtime.Serialization;

using System.ServiceModel;

using System.ServiceModel.Web;

using System.Text;

using System.IO ;

namespace FetchingImageinBrowser

{

public class Service1 : IService1

{

public Stream GetImage()

{

FileStream fs = File.OpenRead(@"D:\a.jpg");

WebOperationContext.Current.OutgoingResponse.ContentType = "image/jpeg";

return fs;

}

}

}

Step 6

Press F5 to run the application. Append GetImage/ in URL to get the output.

See the URL