Hello,

I am currently developping a very large webpart and one of its feature is to display some pictures from an external database, using HttpHandlers.

When the visitor is authenticated, i do not have any issues, but when the visitor is anonymous, the codebehind of my HttpHandler can not be reached.


Please have a look to the code :

BDDImageProgram.ashx (Location: My webpart folder)

<%@ WebHandler Language="C#" CodeBehind="BDDImageProgram.ashx.cs" Class="CMS.CustomHandlers.BDDImageProgram" %>

BDDImageProgram.ashx.cs (Location : App_Code)

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.IO;
using System.Configuration;
using System.Drawing;
using System.Data;
using System.Data.SqlClient;
using TVProgram.BAL;

namespace CMS.CustomHandlers
{
/// <summary>
/// Summary description for ImageAsync
/// </summary>
public class BDDImageProgram : IHttpHandler
{
public void ProcessRequest(HttpContext context)
{
try
{
Guid idProgram = Guid.Parse(context.Request.QueryString["idProgram"].ToString());

Program program = BDD.getProgram(idProgram);

if (program.Picture != null)
{
context.Response.Clear();
context.Response.ContentType = "image/jpeg";
context.Response.BinaryWrite(program.Picture.Data.ToArray());
context.Response.Flush();
}
}
catch (Exception ex)
{
renderError(context, ex.Message);
}
}
public bool IsReusable
{
get
{
return true;
}
}

private void renderError(HttpContext context, string msg)
{
context.Response.Clear();
context.Response.ContentType = "image/jpeg";
// calculate the image width by message length
Bitmap bitmap = new Bitmap(7 * msg.Length, 30);
Graphics g = Graphics.FromImage(bitmap);
// create a background filler
g.FillRectangle(new SolidBrush(Color.DarkRed), 0, 0, bitmap.Width, bitmap.Height);
// draw our message
g.DrawString(msg, new Font("Tahoma", 10, FontStyle.Bold), new SolidBrush(Color.White), new PointF(5, 5));
// stream it to the output
bitmap.Save(context.Response.OutputStream, System.Drawing.Imaging.ImageFormat.Jpeg);
}
}