Changing website favicon dynamically

Question

I have a web application that\'s branded according to the user that\'s currently logged in. I\'d like to change the favicon of the page to be the logo of the private label,

Answer 1

I would use Greg's approach and make a custom handler for favicon.ico Here is a (simplified) handler that works:

using System;
using System.IO;
using System.Web;

namespace FaviconOverrider
{
    public class IcoHandler : IHttpHandler
    {
    public void ProcessRequest(HttpContext context)
    {
        context.Response.ContentType = "image/x-icon";
        byte[] imageData = imageToByteArray(context.Server.MapPath("/ear.ico"));
        context.Response.BinaryWrite(imageData);
    }

    public bool IsReusable
    {
        get { return true; }
    }

    public byte[] imageToByteArray(string imagePath)
    {
        byte[] imageByteArray;
        using (FileStream fs = new FileStream(imagePath, FileMode.Open, FileAccess.Read))
        {
        imageByteArray = new byte[fs.Length];
        fs.Read(imageByteArray, 0, imageByteArray.Length);
        }

        return imageByteArray;
    }
    }
}

Then you can use that handler in the httpHandlers section of the web config in IIS6 or use the 'Handler Mappings' feature in IIS7.