Access image through url and render as jpeg in asp.net

Introduction

In this code snippet, i'm going to explain read image through the url and render the image in asp.net page.

CodeSnippet

class ImageProcessingModule : IHttpModule
{
public void Init(System.Web.HttpApplication context)
{
context.BeginRequest += new EventHandler(OnBeginRequest);
}
private void OnBeginRequest(object sender, EventArgs e)
{
HttpApplication app;
string requestUrl;

app = sender as HttpApplication;
requestUrl = app.Request.Url.ToString();
//requestUrl=requestUrl.Replace("https://", "http://");


//if (!requestUrl.ToLower().Contains("products")) { return; }
string[] strUrl = requestUrl.Split('/');
string ProductCode = string.Empty;
string Size = string.Empty;

for (int i = 0; i < strUrl.Length; i++)
{
if (strUrl[i].ToLower() == "images" && strUrl[i + 1].ToLower() == "products")
{
if ((i + 2) < strUrl.Length)
ProductCode = strUrl[i + 2];
if ((i + 3) < strUrl.Length)
Size = strUrl[i + 3];

string serverDirectory = app.Server.MapPath("~/UploadImages/" + Size);
string FilePath = System.IO.Path.Combine(serverDirectory, ProductCode) + ".jpg";
//app.Server.Transfer("~/ImageSystem/RetreiveImages.aspx?productcode=" + ProductCode + "&size=" + Size + "",false);
// app.Response.Redirect ("~/UploadImages/" + Size + "/" + ProductCode + ".jpg");

byte[] photo = null;
if (System.IO.File.Exists(FilePath))
{
photo = ReadImage(app.Server.MapPath( "~/UploadImages/" + Size + "/" + ProductCode + ".jpg"));//FilePath;
}
else
{
photo = ReadImage(app.Server.MapPath("~/UploadImages/" + Size + "/Missing.jpg"));//FilePath;

}
if (photo != null)
{
app.Response.ContentType = "image/jpeg";
app.Response.Cache.SetCacheability(HttpCacheability.Public);
app.Response.BufferOutput = false;
app.Response.OutputStream.Write(photo, 0, photo.Length);
}

}
}
// app.Response.Write(ProductCode+" hi "+ Size);

}

public void Dispose()
{
}
private static byte[] ReadImage(string p_postedImageFileName)
{
// bool isValidFileType = false;
try
{
FileInfo file = new FileInfo(p_postedImageFileName);


FileStream fs = new FileStream(p_postedImageFileName, FileMode.Open, FileAccess.Read);
BinaryReader br = new BinaryReader(fs);
byte[] image = br.ReadBytes((int)fs.Length);
br.Close();
fs.Close();
return image;

// return null;
}
catch (Exception ex)
{
return null;
//throw ex;
}
}
}

Finally you have to register this httpmodule in web configuration file.

<httpModules>	
<add name="ImageProcessingModule" type="ImageProcessingModule"/>		
</httpModules>