Comments on: Multipart Form Post in C#

By: Stephen

Stephen — Tue, 31 Aug 2010 17:57:34 +0000

Absolutely fantastic post. Hve been working on this for the past two days to no avail. I’ve been trying to programatically post files to a unix server and it does not help when when the Java guys
a) Decide to use a form post method for posting files when FTP would adequately do the Job
b) Give you Zero support when their unix server just returns “403″ bad request, apparently they get nothing in the logs

If anyone is interested in using basic authentication with this code,

after the line

request.ContentLength = formData.Length;

like I had to add the following to get it to work for me,

request.PreAuthenticate = true;
request.AuthenticationLevel = System.Net.Security.AuthenticationLevel.MutualAuthRequested;
request.Headers.Add("Authorization", "Basic " + Convert.ToBase64String(System.Text.Encoding.Default.GetBytes("username" + ":" + "password")));

I also wrapped the FileStream and StreamReader object in my caller method within using blocks, which is just decorative/programming style stuff really if you wish.

By: diss3ntive

diss3ntive — Wed, 23 Jun 2010 02:25:09 +0000

I…..Love……Youuuuuu

By: Pykaso

Pykaso — Mon, 10 May 2010 13:29:14 +0000

For UTF-8 encoded form data im using:

formDataStream.Write(encoding.GetBytes(postData), 0, encoding.GetByteCount(postData));

instead of:

formDataStream.Write(encoding.GetBytes(postData), 0, postData.Length);

By: Matt

Matt — Fri, 09 Apr 2010 01:09:35 +0000

Brian – outstanding! Really helped…

Matt

By: Turkel

Turkel — Sat, 06 Mar 2010 08:57:33 +0000

Hi Mr Brian

I need your help about that post.

First

I have php file that gets data and file from HTML form and uploads file to specific directory by $_FILES methods..

Second

I have windos aplication (c#).User could drag and drop any file to listview.When he/She clicks send button aplication sends datas of user to php file By POST method and it (php file) upadtes the database.

My problem is I wont to send file in listview drag and dropeed by user to php file as It could get file by $_FILES method and acces it.Sory about my english

thanks.what do I have to do by your post?

By: Mithun

Mithun — Wed, 10 Feb 2010 12:24:19 +0000

Awsome post!!! Thanks for helping us out of the drudgery…. This saved a lot of time in my work…. May be this should be added as a part of the C# library.

By: Corey

Corey — Tue, 09 Feb 2010 14:21:16 +0000

This class worked great for posting a multipart form in c sharp. Thanks!

By: Pkpo

Pkpo — Mon, 14 Dec 2009 16:16:23 +0000

I love you !

By: John Sheehan

John Sheehan — Wed, 02 Dec 2009 01:10:19 +0000

Hi Brian, can you email me in regards to the code in this post? Or can you acknowledge if this code is under any sort of license?

By: Upload a File via WebRequest Using CSharp

Upload a File via WebRequest Using CSharp — Tue, 10 Nov 2009 14:15:58 +0000

[...] Brian Grinstead » Blog Archive » Multipart Form Post in C# – So, I needed to roll my own form post. Here is the Multipart Form RFC and the W3C Specification for multipart/form data. After reading these links and searching some forums, here is what I came up with. ….. userAgent, contentType, formData) End Function Private Function PostForm(ByVal postUrl As String, _ ByVal userAgent As String, _ ByVal contentType As String, _ ByVal formData As Byte()) _ As HttpWebResponse Try Dim request As HttpWebRequest = WebRequest. … [...]