Send Image as System.IO.Stream thru WCF REST Service and Consume it in ASP.NET Website

Let’s go thru the code:

WCF Service:

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;
using System.Drawing;
using System.Drawing.Imaging;
namespace PhotoService {
public class Service1: IService1 {
//This method will be called by the application to get Thumbnail
public Stream GetThumbnail(string path) {
try {
Image imgThumb = null;
Image img = Image.FromFile("/\\" + path); //Path for Image Eg. http://localhost:35798/RestServiceImpl.svc/GetThumbnail///YourServer//Images//SampleImage.jpg
imgThumb = CreateThumbnail(img, 100, 100);
var stream = ToStream(imgThumb, ImageFormat.Jpeg);
WebOperationContext.Current.OutgoingResponse.ContentType = "image/jpeg";
return stream;
} catch (Exception ex) {
throw ex;
}
}
//This method will generate thumbanail of 100 x 100
private Image CreateThumbnail(Image image, int thumbWidth, int thumbHeight) {
try {
return image.GetThumbnailImage(
thumbWidth,
thumbHeight,
delegate() {
return false;
},
IntPtr.Zero);
} catch (Exception ex) {
throw ex;
}
}
//Method to convert image in stream
public Stream ToStream(Image image, ImageFormat formaw) {
try {
var stream = new System.IO.MemoryStream();
image.Save(stream, formaw);
stream.Position = 0;
return stream;
} catch (Exception ex) {
throw;
}
}
}
}

IService1.cs

using System;
using System.Runtime.Serialization;
using System.ServiceModel;
using System.ServiceModel.Web;
using System.IO;
using System.Drawing;
using System.Drawing.Imaging;
namespace PhotoService {
[ServiceContract]
public interface IService1 {
[OperationContract]
[WebInvoke(Method = "GET", ResponseFormat = WebMessageFormat.Json, BodyStyle = WebMessageBodyStyle.Wrapped, UriTemplate = "GetThumbnail/{*path}")]
Stream GetThumbnail(string path);
}
}

Figure 1 Service has been created, now creating website to consume this service:

Website

Default.aspx

<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Consume PhotoService.aspx.cs" Inherits="_Default" %>
<!DOCTYPE html>
<html
xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:Image ID="Image1" runat="server" />
<br />
Enter Path of Image
<asp:TextBox ID="ImagePath" runat="server"></asp:TextBox>
<asp:RequiredFieldValidator ID="RequiredFieldValidator1" runat="server" ControlToValidate="ImagePath" ErrorMessage="Enter Image Path Eg. //Server//Images//SampleImage.jpg "></asp:RequiredFieldValidator>
<br />
<asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="Get Image" />
<br />
</div>
</form>
</body>
</html>

Default.aspx.cs

using System;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Runtime.Serialization;
using System.Net;
using System.IO;
public partial class _Default: System.Web.UI.Page {
protected void Page_Load(object sender, EventArgs e) {
Image1.Visible = false;
}
protected void Button1_Click(object sender, EventArgs e) {
try {
string path = ImagePath.Text;
path.Trim();
if (path != null) {
WebClient proxy = new WebClient();
byte[] responsedata = proxy.DownloadData(new Uri("http://localhost:21269/Service1.svc/GetThumbnail/" + path)); //Accept path like: //YourServer//Images//SampleImage.jpg
Stream stream = new MemoryStream(responsedata);
System.Drawing.Image img = System.Drawing.Image.FromStream(stream);
img.Save(Server.MapPath("~/Images/Test.jpg"));
Image1.ImageUrl = "~/Images/Test.jpg";
Image1.Visible = true;
} else {
Response.Write("Enter Image Path Eg.//Server//Images//SampleImage.jpg");
}
} catch (Exception ex) {
Response.Write("Error : " + ex.Message.ToString());
}
}
}