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I have a asp.net project.i am using a file uploader, i want to preview the image in a panel or div what i selected in the fileuploader control, what is the solution?
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1 solution

add a httphandler class

C#
<%@ WebHandler Language="C#" Class="ImageHandler" %>

using System;
using System.Web;

public class ImageHandler : IHttpHandler, System.Web.SessionState.IRequiresSessionState
{

   public void ProcessRequest (HttpContext context) {
    //Checking whether the imagebytes session variable have anything else not doing anything

       if ((context.Session["ImageBytes"]) != null)
       {
           byte[] image = (byte[])(context.Session["ImageBytes"]);
           context.Response.ContentType = "image/JPEG";
           context.Response.BinaryWrite(image);
       }
   }

   public bool IsReusable {
       get {
           return false;
       }
   }

}



and in the preview button click
C#
protected void btnPreview_Click(object sender, EventArgs e)

   {

       Session["ImageBytes"] = PhotoUpload.FileBytes;

       ImagePreview.ImageUrl = "~/ImageHandler.ashx";

   }



Here PhotoUpload is my File Upload control and ImagePreview is asp:image control.
 
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