Http file upload with parameters

An update to my old code sample for HTTP uploads: you can now post form variables with the files. The new version of Upload.cs contains a method overload that allows you to pass in a StringDictionary of POST parameters. Some basic instructions for use are available at the old post. This file will replace the current Upload.cs in JHLib – until the next release, you can also take a look at the current version of the library for some usage examples of the upload code in general.

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March 20, 2005 В· Jouni Heikniemi В· 9 Comments
Posted in: .NET

9 Responses

  1. Nick - June 30, 2005

    Would you please offer a web example for this code?

  2. Jaykul - September 6, 2005

    You mustn't use a StringDictionary, they convert the keys to lowercase.

  3. opello - February 21, 2006

    Great code, grabbing your new version with variables.
    One thing that I was curious about was your boundary creation. Why you didn't just use:
    Guid.NewGuid().ToString("N")
    but replaced the hyphens with String.Replace, which I would think slower than using the Guid's own formatting routine?

  4. Junaid - June 5, 2006

    Hi Jouni,
    I want to implement the progerss bar during file upload in the new version of Upload.cs that contains a method overload that allows you to pass in a StringDictionary of POST parameters.
    I implemented in one small application, its working fine…. I want to know how we can implement the progress bar….
    Your help will be great to me.
    anyway…. Great coding by you..
    Thanks & Regards,
    Junaid

  5. alu - November 1, 2006

    It's not really helping. How can do this? Examples! :D

  6. Franklin - December 22, 2006

    Great Code!!!
    But I'm having a problem when I try to use GetResponse Method, it always send me Internal Server Error HTTP 500.
    I have add UserAgent and timeout but still I'm receive the same error message.
    I'm trying to upload a file, I send all the require information, Viewstate, cookies, filename everything.
    Can anyone help me with this.
    webRequest.ContentLength = postData.Length;
    using (Stream s = webRequest.GetRequestStream())
    postData.WriteTo(s);
    postData.Close();
    webRequest.Timeout = 10000;
    webRequest.UserAgent = "Mozilla/4.0+";
    return (req.GetResponse() as HttpWebResponse);

  7. Ilya_M - March 10, 2007

    Hi
    First of all – thank you for the code you supplied.
    Second – I have a problem and I was hopping you could help me to solve it: I'm using this code to upload xml file from PDA to a Apache Webserver that runs on my local machine. The function successfully finished but no file appears on the web server.
    Can you advice ?
    Thanks

  8. Ilya_M - March 10, 2007

    One more question – I managed to make this work in this way – I have apache server and while it receives PUT http request, it triggers perl script that should take care of upload.I entered in this script logging and I do see the content of the data I'm sending but … it sends 310 bytes while client can read only 302, i.e. 8 byte less than exists. Does somebody have any idea why ? This make the read loop to be infinite.
    thanks in advance

  9. ian james - May 29, 2007

    Hi,
    I am new to .NET.
    I have tried your code. But I am getting an error at line "return (req.GetResponse() as HttpWebResponse);" in the Upload() method.
    The error is:
    "An unhandled excption of type 'System.Net.WebException' occured in system.dll"
    "Additional Information: The remote server returned an error: (405)Method Not Allowed."
    I am using the old sample code (without updation). I can't understand what should I enter in the 'Fieldname' field. The following are my input details:
    File: C:\Documents and Settings\User\Desktop\header.js
    Fieldname: header
    My ultimate aim is to upload a file to the server using http post method.
    Could you help me please?
    Thanks