imagehandler.ashx image doesn't display in chrome

Question

imagehandler.ashx image doesn't display in Chrome browser. How can I fix it..?

My Codes (imagehandler.ashx):

public void ProcessRequest(HttpContext context)
{
    if (context.Request.QueryString["YazarID"] != null)
    {
        string YazarID = context.Request.QueryString["YazarID"];
        DataTable dt = new DataTable();
        string query = "select img from Register where YazarID='" + YazarID + "'";
        dt = Database.GetData(query);

        HttpResponse r = context.Response;
        r.WriteFile("../Pictures/300/" + dt.Rows[0]["img"]);
        HttpContext.Current.ApplicationInstance.CompleteRequest();
        context.Response.Flush();
        context.Response.Close();
        context.Response.End();
    }
}

images looking like this in Chrome browser;

VDWWD · Accepted Answer · 2017-02-08T23:06:04.653

You are not sending the content-Length. It could mess up the images (and other files) in Chrome. Assuming the file is correctly saved in the database of course.

public void ProcessRequest(HttpContext context)
{
    //create a new byte array
    byte[] bin = new byte[0];

    //get the item from a datatable
    bin = (byte[])dt.Rows[0]["img"];

    //read the image in an `Image` and then get the bytes in a memorystream
    Image img = Image.FromFile(context.Server.MapPath("test.jpg"));
    using (var ms = new MemoryStream())
    {
        img.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg);
        bin = ms.ToArray();
    }

    //or as one-liner
    bin = File.ReadAllBytes(context.Server.MapPath("test.jpg"));

    //clear the buffer stream
    context.Response.ClearHeaders();
    context.Response.Clear();
    context.Response.Buffer = true;

    //set the correct ContentType
    context.Response.ContentType = "image/jpeg";

    //set the filename for the image
    context.Response.AddHeader("Content-Disposition", "attachment; filename=\"myImage.jpg\"");

    //set the correct length of the string being send
    context.Response.AddHeader("content-Length", bin.Length.ToString());

    //send the byte array to the browser
    context.Response.OutputStream.Write(bin, 0, bin.Length);

    //cleanup
    context.Response.Flush();
    context.ApplicationInstance.CompleteRequest();
}

Thank you VDWWD. However, my image is not saved to DB. Only imagepath is in the DB. Physical image is under the directory of "../Pictures/300/". What can I do for this situation..? — Ali Akyıldırım, Feb 08 '17 at 22:57
Thanks a lot again. I removed this statement and worked right; bin = (byte[])dt.Rows[0]["img"]; — Ali Akyıldırım, Feb 09 '17 at 00:22

imagehandler.ashx image doesn't display in chrome

1 Answers1