Image Handler not Loading Image

Question

I am using Image handler to resize image. But it is not loading image.

View :

 <img src="ImageHandler.ashx?file=~/Images/Releases/koala.jpg" style="width:100px; height:100px;" />

Image Handler code. Sorry I was not able to add the whole image handler code here so added as image. What I am missing here. Please suggest.

Answer 1

I found two issues.

1. QueryString value in the request URL should be just filename - ImageHandler.ashx?file=koala.jpg

   <img src="ImageHandler.ashx?file=koala.jpg" style="width:100px; height:100px;" />

2. QueryString name should be file instead of photo_url.

Please make sure the following code works before resizing it.

public class ImageHandler : IHttpHandler
{    
    public void ProcessRequest(HttpContext context)
    {
        string fileName = context.Request.QueryString["file"];
        string filePath = context.Server.MapPath("~/Images/Releases/" + fileName);

        context.Response.AddHeader("content-disposition", 
             string.Format("attachment; filename={0}", fileName));

        if (File.Exists(filePath))
        {
            byte[] bytes = File.ReadAllBytes(filePath);
            context.Response.BinaryWrite(bytes);
        }
        else
        {
            throw new HttpException(404, "Invalid photo name.");
        }
    }

    public bool IsReusable { get { return false; } }
}