Submit A Form With A Large File Upload And Send Ajax Requests?
Mar 8, 2011
This works in other browsers but not in chrome. I am trying to allow users to upload large files and have an ajax call to update them on the progress of the file upload.
So a unique ID is generated on the client side and added to the action of the form before sending. Then the form is submitted (form only contains a file upload input) and an ajax call is made to get the progress of the upload. The ajax call goes to another page and uses the ID to lookup the upload.
I am using JQuery 1.5.1. Debugging this and putting something on the error function give me nothing other than "error". Not very helpful. I used Chrome's debugger and it just says failed to load resource xxxx.aspx. xxx.aspx is the URL i needed. Turns out that there seems to be some sort of conflict between the form and the ajax call.
My problem is Asyncfileupload control is working fine when i debug the application and upload large file...but when i run this from iis it only upload file less then 5 kb. why is that so?? i did try adding Httpruntime maxRequestLength="4096" i tried to find on search but no help... did m i mising any settings..??
I have an asp.net panel having various controls including gridview. I have converted this panel into pdf and attached it as an email attachment using memory stream. Everything is working fine. Now I have an File upload control outside panel through which I have to attach a file and send it in mail along with the already attached panel. But I am unable to figure out how to do it.
I've got a button like this <button type="submit" value="xyz".That's used to SUBMIT a FORM to an UPLOAD method running in IIS. Where in the CONTEXT or CONTEXT.REQUEST do I find the VALUE "xyz"?
What is better way to large upload file.using a web service or in application itself.If in application, how can we check that files is to upload in a regular interval.actually i dont want user to wait for complete uploading, when it starts uploading user will get response of uploaded and uploading will be done in backgroud.I am not sure this type of task can be done in webservice also so that user doesnot need to wait for complete uploading.and one more query which event fires when the page redirects to another page.Is it Page_UnLoad or Dispose
I am trying to upload file in WCF.When I try to upload file I am getting following error message. System.ServiceModel.CommunicationException:The socket connection was aborted.
I have a scenario which I am looking at where large files which are about 30-40 MB are being FTPed to a server. I am looking at creating a .net screen with the FTP control to upload the file to a Unix server. I need to know how much of a performance hit it is to work with such large files, is it a feasible option in this scenario? I might have to create a .net component for the same and call from ASP application. Is it doable?
For example: If user "Tom" is logged-in now and observing page "1.aspx" I want to know about it. I also want to know when "Tom" stop observing that page. He can move to another page, than I know by server page request he is not any more at page "1.aspx", but what if he moves to another web site? Or closing his browser?
How can I know he has stopped observing that page.
I think I need to send Ajax requests every 10 seconds in order to check it, but what kind of request?
I have standard asp.net file upload control on a page. If a user try to upload large file they get all the cryptic error messages like page not found etc.I dont want them to be able to upload large files, but still want to show gracefull error message saying that file is too large to upload or something like that. Is there any way to do that?
i have a large excel file which has 1 lakh row , i want to insert these data in my table i am using entity framework for insert but it takes more than 45 minutes to insert which is too much, i want to speed up the uploading process what should i do. can I use multithreading for it if yes then how i can use? if any other way to do this process.
I'm using Filestream for read big file (> 500 MB) and I get the OutOfMemoryException. Any solutions about it?? I want this in my app asp.net: Read DATA from Oracle Uncompress file using FileStream and BZip2 Read file uncompressed and send it to asp.net page for download. When I read file from disk, Fails !!! and get OutOfMemory. My Code is:
using (var fs3 = new FileStream(filePath2, FileMode.Open, FileAccess.Read)) { byte[] b2 = ReadFully(fs3, 1024); } // [URL] public static byte[] ReadFully(Stream stream, int initialLength) { // If we've been passed an unhelpful initial length, just // use 32K. if (initialLength < 1) { initialLength = 32768; } byte[] buffer = new byte[initialLength]; int read = 0; int chunk; while ((chunk = stream.Read(buffer, read, buffer.Length - read)) > 0) { read += chunk; // If we've reached the end of our buffer, check to see if there's // any more information if (read == buffer.Length) { int nextByte = stream.ReadByte(); // End of stream? If so, we're done if (nextByte == -1)............................
I need large file upload support in my hosted (godaddy) medium trust asp.net app.It obviously needs to be responsive with indication of progress, so handling the stream myself is important.This all seems pretty simple and works well when in full trust:
1.Write an HttpModule that listens for file uploads.
2.Get the HttpWorkerRequest object from the Context using reflection.
3.Write out stream to a FileStream
All very well and good except that I keep getting permission exceptions when trying to get the HttpWorkerRequest object from the context in medium trust. Whether I use reflection or I use System.IServiceProvider.GetService() to get the object (which is clearly using reflection), I get the same error.
I have also tried using System.Web.HttpPostedFile. It has a property InputStream. But it seems this object is uploading the entire file on initialization, so no good.I have googled myself tired, and can't find another alternative.
Even if it is a security risk to let users have the HttpWorkerRequest object, surely the framework provides another way to handle the stream of files when Method="POST" and enctype="multipart/form-data"
I am using the async file upload control to upload to a image file. I want the user to upload only jpg files. And for that I am checking the uploadedfile content type in server side, after the upload complets. I wanna check this, before upload starts. There is one javascript method
function startUpload(sender, args){}
but how to access the content type of the file selected by user.
I am using upload feature in my asp website. So i am using file input type. But this control add a default upload button browse and a textbox where path is shown after selecting file in Internet explorer. I don't want to show browse button etc. So what i did is add a button "Attach a File" and i have written script 'triggerFileUpload' function where i make it to click on upload control.
So now when i click on "Attach a File" button browse for file windows appears and can select file to upload. But when i click on submit button the file upload control becomes reset and file is not uploaded. Error is that on clicking to submit button the file control becomes null. It happens only in internet explorer.
Below is code which can show the problem i am facing in IE.Same problem comes if i use asp:FileUpload control also. (my plan is to hide the file control and show only attach file button to user).
I've read several questions explaining how to handle file uploads in asp.net mvc. I am trying to submit both the file as well as form fields describing it. That might be the issue. I'll go write to the code:
View code:
<% using (Html.BeginForm("CreateFile", "Video", FormMethod.Post, new { enctype = "multipart/form-data" }))
I've seen several examples, but haven't come across one that is trying to submit both a file and other form data. Some other things of note is other examples seem to not put a HttpVerb attribute on the action method at all and have an empty parameter string. The files I'm looking to accept will be video files of various types but they can be anywhere from 100-300 mb. The files I've attempted to use (locally) have been rather small comparatively (50 or so mb).I know it's been asked but I feel like my issue here is different somehow. When I submit the page I see:
The connection was reset
The connection to the server was reset while the page was loading.
I have a standard ASMX web service which uses a lock object to process the first request it receives and reject other requests that come in before processing completes. The web service is hosted on a Windows Server 2003 box with a single-core processor. To test whether this works as expected, I wrote a client that spawns 100 threads. Each thread makes an asynchronous POST call to the web server (i.e., HttpWebRequest.BeginGetResponse()). From my own logging, what I'm seeing on IIS is that two threads are spawned. Let's say thread IDs 1 and 7. Thread 1 is assigned a small number of requests. It accepts and processes them, one after another. Thread 7 is assigned a large number of requests. It rejects them. Does anyone have theories on the following: Why are two threads spawned? And not four or a hundred? Why does there seem to be thread discrimination? Thread 1 looks like it has control of the lock object at all times.
My requirement is like .... I have a text box for ToEmail address , another control is to upload "n" no of files. And a button to send those selected files ToEmail address which had entered in textbox.
Frameworks like Node.js, Tornado, and Twisted let developers create server-push applications that supports large number of concurrent hanging requests (10k+). From what I understand, they all achieve this by not creating threads to service each hanging request.
Can AsyncController be used to service large number of inactive concurrent requests?If so, are there any reasonably large ASP.NET MVC websites using this approach to create long-poll applications?
