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Direct Download Example

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FileExplorer
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Josh
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Josh asked on 03 Aug 2009, 09:13 PM
In the direct download example, Handler.ashx is referenced.  I am looking for the
code that makes up that generic file, because I can't get the direct download
to work right without it.  I looked everywhere, however, I might have missed it.
Thanks in advance.

Joshua

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ManniAT
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answered on 03 Aug 2009, 09:47 PM
Hi,

you are right - this file is not browsable in the samples.
But you can find it in the following directory on your local machine (after installing rad controls):
<%PROGRAM_FILES%>\telerik\RadControls for ASP.NET AJAX Q2 2009\Live Demos\FileExplorer\Examples\FilterAndDownloadFiles

Regards

Manfred
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Josh
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answered on 04 Aug 2009, 11:37 AM
ManniAT,

 Thanks for the reply.  I looked through the folders and I do not have that folder.  Could you
please post on here, so that I may duplicate it on my machine.  I wonder why they didn't
post the Handler.ashx in the online example?

Joshua
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Bryan Davis
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answered on 23 Feb 2010, 02:47 PM
Here is the code for the handler incase you still need it.

<%@ WebHandler Language="C#" Class="Telerik.Web.Examples.FileExplorer.FilterAndDownloadFiles.Handler" %>  
 
using System;  
using System.Data;  
using System.Configuration;  
using System.Web;  
using System.Text;  
using Telerik.Web.UI;  
 
namespace Telerik.Web.Examples.FileExplorer.FilterAndDownloadFiles  
{  
    [RadCompressionSettings(HttpCompression = CompressionType.None)] // Disable RadCompression for this page ;  
    public class Handler : IHttpHandler  
    {
        #region IHttpHandler Members  
 
        private HttpContext _context;  
        private HttpContext Context  
        {  
            get 
            {  
                return _context;  
            }  
            set 
            {  
                _context = value;  
            }  
        }  
 
 
        public void ProcessRequest(HttpContext context)  
        {  
            Context = context;  
            string filePath = context.Request.QueryString["path"];  
            filePath = context.Server.MapPath(filePath);  
 
            if (filePath == null)  
            {  
                return;  
            }  
 
            System.IO.StreamReader streamReader = new System.IO.StreamReader(filePath);  
            System.IO.BinaryReader br = new System.IO.BinaryReader(streamReader.BaseStream);  
 
            byte[] bytes = new byte[streamReader.BaseStream.Length];  
 
            br.Read(bytes, 0, (int)streamReader.BaseStream.Length);  
 
            if (bytes == null)  
            {  
                return;  
            }  
 
            streamReader.Close();  
            br.Close();  
            string extension = System.IO.Path.GetExtension(filePath);  
            string fileName = System.IO.Path.GetFileName(filePath);  
 
            if (extension == ".jpg")  
            { // Handle *.jpg and  
                WriteFile(bytes, fileName, "image/jpeg jpeg jpg jpe", context.Response);  
            }  
            else if (extension == ".gif")  
            {// Handle *.gif  
                WriteFile(bytes, fileName, "image/gif gif", context.Response);  
            }  
            else if (extension == ".pdf")  
            {// Handle *.pdf  
                WriteFile(bytes, fileName, "application/pdf", context.Response);  
            }  
           
 
        }  
 
        /// <summary>  
        /// Sends a byte array to the client  
        /// </summary>  
        /// <param name="content">binary file content</param>  
        /// <param name="fileName">the filename to be sent to the client</param>  
        /// <param name="contentType">the file content type</param>  
        private void WriteFile(byte[] content, string fileName, string contentType, HttpResponse response)  
        {  
            response.Buffer = true;  
            response.Clear();  
            response.ContentType = contentType;  
 
            response.AddHeader("content-disposition""attachment; filename=" + fileName);  
 
            response.BinaryWrite(content);  
            response.Flush();  
            response.End();  
        }  
 
        public bool IsReusable  
        {  
            get 
            {  
                return false;  
            }  
        }
        #endregion  
    }  
}    
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Tommy
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answered on 17 Jun 2010, 08:17 PM
What about a VB version of the file, I tried converting it but it doesn't seem to want to work ...
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Dobromir
Telerik team
answered on 21 Jun 2010, 12:59 PM
Hi Tommy,

You can use the this online code converter tool in order to convert C# into VB.
For your convenience I have converted the handler's code into VB. Please, find the attached file.

Sincerely yours,
Dobromir
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Josh
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ManniAT
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Josh
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Bryan Davis
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Tommy
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Dobromir
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