C# - How To Upload Files Asynchronously
Sep 28, 2010
I've been looking for a way to achieve this behavior and I found this sample project.
The trick in this project is that it changes the form target to an iframe created on the fly.
So far so good, I can get the byte[] on the server-side. But I need to change an image preview after the file is uploaded.
How can I get the iframe to update the main page? Would I have to save it on a file on the disk, make a javascript callback to change the image url? Is there another way to do this? What's recommended?
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Jan 20, 2011
I have looked at various options for uploading files asynchronously in ASP.NET. the default Microsoft control does full postback, AsyncFileUpload control has only one button and cannot change the text and appearance and I need two buttons browse and upload. not interested in flash based controls. I found this
http://mattberseth.com/blog/2008/07/aspnet_file_upload_with_realti/.
html close to what I need. it uses iframe to achieve this, but I would like a simplified version of this. I just want to display an image while uploading, I don't need number of bytes transferred etc. how can I achieve this? I just need to upload the file asynchronously without page flickering and save the file to the server and update the page contents after the upload is complete.
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Jul 15, 2010
Im using a file uploader to upoad files to a folder used for upload.But the problem is this folder is a linux folder. I have made it a shared folder so that I can access from windows by samba. So, file transfer is successful when I'm using os but when I try to upload something from my websites uploader to this folder, this process is not successful. I have given all permissions to this folder.Don't know whats the problem.I have used both type of slashes for directory but still it is not successful.
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May 31, 2010
i am trying to upload files through the ASP.NET File Upload control.
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Mar 8, 2011
I want to allow a user to upload several files with one upload action. What is the simplest way to do this?
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Aug 23, 2010
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Apr 15, 2010
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Dec 11, 2010
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Apr 5, 2011
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Jun 2, 2010
I am unable to upload files, here is my aspx file
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Jan 5, 2010
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Jan 15, 2011
i want to upload files that are only jpeg, jpg etc. But i couldn't filter the files in the opening window. I want to change the text "all files" to jpeg etc. in the asp.net. (C#)
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Mar 23, 2011
That's maybe a strange subject but it was the best I could come up with. The thing is I need to upload a set of files from a web site into our CMS. I know how to do this via a file upload control but is it possible to do this when I've instead got URL's to the files? They are pictures by the way. Is it possible to get a file located on another server into a Stream?
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Jan 15, 2010
Can I upload files without having a fileupload control? I was looking at the HttpFileCollection class, but I believe that only works with the fileupload control.
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Feb 11, 2011
We use the MojoPortal to a website and have some problems to upload files that is around 100 MB with the upload module. (Pleas note that this has probably nothing to do with MojoPortal but with the ASP.NET and the IIS)
The MojoPortal is set to use regular file Upload(not Neat Uploader) and to be able to upload big files we have set the following :
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Jun 12, 2010
Anyone got some good pointers at an open source (article for creating your own would even be better) component to upload large files.SlickUpload for instance works great, and surely worth the money, but as this is for a pet project, a paid solution is just not what I'm after.
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Apr 4, 2011
Need to upload files in mapped drive. i tried with UNC path. locally i tried with 2 systems its working fine. but in production environment its not working. Scenario is, 2 systems with windows 2003 server. one is app server and second is data server. Hosted app in IIS. Its something with the drive/folder permissions.
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Feb 3, 2011
I have a requirement where i need to upload mulitple files with one file upload control. I googled and found ajax uploader control but should be paied to use that. Is there any control similar to that which can be get at free of cost or could any one provide me sample code how can it be done.
Actually i have to upload car images and bike images to respective folders say carfolder and bikefolder. I used two fileupload controls one for car and other for bike and one button. when clicked on button the following code executes to upload the files
[Code]....
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Nov 15, 2010
need complete ASP.Net with C# code to upload pdf ,word and image files ,save and also retrieving files from and to a SQL database directly.I need to have a webform which uploads different typesof files from hard drive to SQL database and also I want to retrive,delete,save these files in database
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Mar 3, 2011
I am submitting my form's data that are input from textbox,dropdownlist,radiobuttons etc. to database using a XML web method which is submitting data asynchronously.Obviously page is not posted back and html input field's data are captured through javaScript code.Then with the javaScript code an XML Web Method is called with those input fields passed as parameters.
Upto this point everything is fine since all data that i have to submit is of string type.
But how can i upload attachments ? Thing is that i have to upload multiple attachments and all the attachments will be submitted when user clicks Submit button on the form.
When user clicks submit button on the form all form data and all files selected will be saved in the database through a XML web Serice which submits data asynchronously.
How can i upload files through XML Web Service ?
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Oct 27, 2010
Let me first describe the actual need first.
I have a java application runnning on my pda ( a Windows Mobile device). I want to upload a text file from my device to a server using gprs connection.Currently I have a jboss server, and a client application in VC++ that uses the Wininet api.This VC++ client application establishes the gprs connection and also uses the http method of wininet api for file uploading. I am having difficulty using the http post method for uploading files to the jboss server. I want to use Http "PUT" method at client side.
So I want to create a application at server( I want to use IIS now instead of jboss),that would accept the byte stream from my VC++ client application and create a file at a folder on the server.
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Feb 15, 2010
I am building a website where i need a page where user can upload large video files, i have created WCF service with streaming but i am calling that WCF service from Button_Click event of web page.
I have used below mentioned article for WCF service creation
WCF Streaming
I have used streaming as it should be efficient and should not be buffered in memory of server.
Now questions
1) I am having doubts that the entire file is uploaded to the web server and then it is transferred to WCF Service server...if this is true then i am not getting advantage of streaming as well as iis and web server will be down very soon if user uploads large file or multiple user are uploading files con currently
2) Is there any other efficient way to do same operation with some other technique
EDIT :
If I am not calling WCF Service method from ASP .Net code in that case also it is transferring bytes to the web server which i have checked with HTTPFox
I have checked above thing with upload control and putting one button on UI whose click event is bound to one method in code behind.
So, still i am having that confusion that how data is transferred
Client Machine - Web Server (ASP .Net Application) - Service Server (WCF Service)
Client Machine - Service Server (WCF Service)
NOTE : If i am putting a debug point on button_click and uploading 10 kb file it hits that in less then 1 sec. but if i am uploading 50 mb file then it is taking time.
I placed code of calling WCF service inside that button_click event
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Dec 26, 2010
I'm new in ASP.NET , I finished one website by ASP.NET with Visual basic (2008), It's contains 2 files (Default.aspx & Thanks.aspx). The Default.aspx is main page. Now I want to upload them on server. I already have space on one server.
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Dec 16, 2010
In my website I have a page to upload files. It works fine when I run the website on my local machine and also in visual studio in the server. But, I cannot upload files when I access the website through the browser. I have given all the pemissions I know to the upload folder like - ASPNET, Network Service and IUSR. I am using IIS 6. It is a dedicated hosting. I can access all the pages, but only the upload does not upload files to the folder and it goes to the error page (but I don't know what is the error).
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