Unable To Download The File Using WebClient
Nov 8, 2010I am downloading a file from remote server by using the following code.
[code]....
If we paste the remote url in browser then it is downloadding the file without any error/warning.
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[code]....
However, there are a couple of problems with this approach:
The Thread.Sleep() is locking up my Form. I still need to make my own Thread or use BackgroundWorker. (I would like to avoid this as much as possible)The DownloadFileCompleted event is being triggered after ALL files has been downloaded. I don't know if this is a side-effect of using
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I have tried NetworkCredential("user", "password", "domain")
and
CredentialCache cc = new CredentialCache();
cc.Add(new Uri("http://site/"), "Windows", new System.Net.NetworkCredential("user", "password", "domain"));
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Here is what was once working:
WebClient wc = new WebClient();
string FileName = Server.MapPath(\App_Data\rpt.htm);
wc.Credentials = CredentialCache.DefaultCredentials;
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Jan 26, 2011In our ASP.NET web site we have developed an aspx page that allows the user to download a file. The file path is sent as a parameter and then the file contents are read and written to the response stream. The code that we have used is the following:
string filepath = HttpContext.Current.Request.Params["FilePath"];
Response.Clear();
Response.ContentType = "application/octet-stream";
Response.AddHeader("Content-Disposition", "attachment; filename=" + Path.GetFileName(filepath));
Response.TransmitFile(filepath);
Response.Flush();
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We have being looking for a clue sniffing the HTTP traffic that reach to the browser with Fiddler, but we have seen nothing strange. In all cases the file contents are sent to the browser with no differences, so it seems that it is the browser doesn´t show the open/save/cancel dialog. Here is a sample of the headers received in the browser with a failing file:
HTTP/1.1 200 OK Proxy-Connection:
Keep-Alive Connection: Keep-Alive
Content-Length: 421395 Via: 1.1
IBISA01 Date: Wed, 26 Jan 2011
12:02:54 GMT Content-Type:
application/octet-stream Server:
Microsoft-IIS/7.5 Cache-Control:
private Content-Disposition:
attachment;filename=P08-0656 Interflex
Especificación Inteface SGA ERP
Version 0.1.pdf X-AspNet-Version:
4.0.30319 X-Powered-By: ASP.NET
And these are the headers of a file that can be downloaded:
HTTP/1.1 200 OK Proxy-Connection:
Keep-Alive Connection: Keep-Alive
Content-Length: 290816 Via: 1.1
IBISA01 Date: Wed, 26 Jan 2011
12:03:29 GMT Content-Type:
application/octet-stream Server:
Microsoft-IIS/7.5 Cache-Control:
private Content-Disposition:
attachment;filename=Acalaracion final
Fichero ascii proveedores
Interflex.msg X-AspNet-Version:
4.0.30319 X-Powered-By: ASP.NET
In all cases, the full contents of the file appear after the headers with apparently no problems related to encoding. We are wondering if there is some possibility to debug or trace the Internet Explorer activity to see why is rejecting to download the files. The web server has Windows Server 2008 R2 and IIS 7.5. The browsers that we are using are IE 8.0 over Windows 7.
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string mstitle = title.ToUpper();
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(there are also versions with .txt and .pdf) the file definitely exists at the location in .txt, .pdf and .mobi extensions. however, the .mobi version simply won't work i get an error 404 resource not found. mystifyingly, the pdf and txt versions work perfectly.
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<add key="FileFolder" value="Files/"/>
<add key="LocalFileFolder" value="D:REAL" />
the code I am using to download is:
CreateDirectoryIfDoesNotExist();
WebClient webClient = new WebClient(); [code]...
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This is the website I have to far:
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Upload.aspx.cs" Inherits="ABC.Web.Upload" %>
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<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
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<input type="file" id="File1" name="File1" runat="server" />
<input type="text" id="FileId" name="FileId" runat="server" />
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</body>
</html>
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Mar 30, 2010Referencing my Earlier Question, regarding downloading a file from a server and handling exceptions properly. I am positive that I had this solved, then in classic programming fashion, returned days later to frustratingly find it broken
Updated code:
private static void GoGetIt(HttpContext context)
{
var directoryInfoOfWhereTheDirectoryFullOfFilesShouldBe = new FileInfo(......); [code]....
This was working fine, and returning the zip, otherwise if the file didn't exist returning 404. Then on the client side I could handle this:
public bool Download()
{
try
{
using (var client = new WebClient()) [code]....
But the problem now is two things.
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try
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[Code].....
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[Code]....
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[code].....
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