AJAX :: Uploading Files Using Javascript And Ashx On Server Side?
Mar 26, 2010
i want to build a custom control using javascript on client side and ashx on server side.
I know about SWFUpload, how can i configure it with ashx on server side.
any tutorial how i can use FLASH objects to transfer files from client to server. i been looking for such tutorial for a while that uses flash object on client side and sends file info using bytes array to the server. also i want to reduce the size of the file on the client side before sending to safe bandwidth.
basically my client side is pure HTML/CSS/Jquery and Javascript using Ajax and my server side is ASP.NET with C# and most ASHX
I know that I can receive an javascript object from the server via ASP.NET AJAX using Json. But I am not sure how can I send an javascript object from my client-side javascript to my server-side code. And if I can, how can I extract this object in my server-side code and access its members?
I have a tricky problem. I am in a situation where I need to use a method defined in a .cs file from a javascript function. The problem is we are using .NET 1.1 and AJAX cannot be used for the application.
Also, I will need to pass a string from the javascript to the server side method. The page where I am implementing the javascript is a .as
I have tried doing a post back and creating a RaisePostBack event handler method (both in the .aspx page and the .ascx user control) but no luck.
The javascript is called from a span's onclick event. The javascript function's input parameter would be a string which I will need to use to instantiate an Attachment.
I created a method which instantiates an Attachment using a string and calls the corresponding Delete() method for the Attachment object.
Now, I will need to pass the string from javascript function to the method I have created. I cannot use PageMethods.
I have a panel extended by the ModalPopupExtender that is sometimes shown using the .Show() method in my code-behind. I have a javascript function that resizes the popup and am able to get it to run when I use the client-side show function but how do I run the same javascript function when using the server-side Show() function?
i have used PageMethods to access the server side functions in javascript , but now my problem is that with pagemethods your controls will not go throught the full page lifecyle and these leads me to have "Object not set for an instance of an object" error. Now can someone come with a differnt approach without using pagemethods. What i want is to call a server side function , i dont want to pass any parameters to it
ASP.NET server controls has a few categories, for example, normal ones e.g. TextBox, Button which can be done in HTML/JS; Validation controls: can be done in JS; Login controls: I have seen them implemented in JS. Data bound controls: not sure, but maybe JS can work directly with databases, implementing controls like photo slider. So in the time span of next 5-10 years, will server-side web programming model fall out of mainstream and be replaced by JS/Ajax that interacts directly with databases?
What I want to do: dispose of a session upon detecting an "OnBeforeUnload" event in the client. I know it doesn't fire 100% of times (90% accuracy works fine for me)
Here I saw how to do it with ajax, this system, however, breaks down with ajax: I can't use it at all.
I have a async file upload control and I am doing client side validation for Image."OnClientuploadstarted" I am doing the client side validation.My validation is working fine but my problem is that the file upload control text box goes green (i.e file is loaded on the server) even if the validation fails which is I dont want.What I want is when the client side validation fails the file does not gets loaded on the server and the Async file upload textbox does not goes green.I have goggled but have not found a suitable solution.
I couldn't upload anythink to a server using FileUpload control (access denied exception). I changed permissions for required folder and gave aspnet user full access. It did not work (I got access denied exception). Than I changed permissions again and gave full access to all users on the machine - now upload works. As far as I understand, it makes my site vulnerable and I should give full access to only one user. Could anyone tell me which user IIS 7.5 uses?
i made a file uploader to folder named (Books) and i saved the name and the bath of the uploaded file to my DataBase but when i wanna download the uploaded file from the server ? how i make it ? by hyperlink ?
I am working on some project where I am needed to allow users to upload files, but only in pdf and .doc format. Now I know how to let users upload files, but I do not know how to check whether an uploading files is pdf and .doc or not. How could I know that? And how could I know the size of each file, for the file should be no greater than 3 MB?
Also, I have alloted a separate folder for the files that are uploaded by users. I have one page that displays the links to download the files in that folder. I needed to know how could I keep the track of the folder, for the files get uploaded every time? Or in other words, how could my 'downloads page' know about the files in that folder and create links for each file in that folder for the download? Also, if I create a link of a file for downloading purposes, will the file be downloaded when one clicks the link?
I have some code that allows users to upload file attachments into a varbinary(max) column in SQL Server from their web browser. It has been working perfectly fine for almost two years, but all of a sudden it stopped working. And it stopped working on only the production database server -- it still works fine on the development server.
I can only conclude that the code is fine and there is something up with the instance of SQL Server itself. But I have no idea how to isolate the problem.
I insert a record into the ATTACHMENT table, only inserting non-binary data like the title and the content type, and then chunk-upload the uploaded file using the following code:
uploading multiple files from client to server with asp.net.I have been looking at the asp.net upload control but that is for one file (unless someone knows a better way to do it).
For what I want to do I don't even really need a browse. I know the files off of the client are at a certain location. Is it possible to create a collection of *HttpPostedFile*s and upload those?
I don't think it is possible but would be glad to be proven wrong. Is there a different asp.net method or control that will easily allow uploading multiple files from client to server?
code with windows application and it works in a good way and files uploaded to server successfully using text box control and open file dialog,but when I tried it with upload control on Asp.net application it doesn't work and gives error : Could not find file .......this is my code in windows application under button click FileInfo toUpload = new FileInfo(this.txtFile.Text); FtpWebRequest request = (FtpWebRequest)WebRequest.Create(this.txtAddress.Text + "/" + toUpload.Name ); request.Method = WebRequestMethods.Ftp.UploadFile;
have a web application which will allow me to upload files to my web folder. I have used the following code for uploading files (VB) on click of BUTTON UPLOAD
If FileUpload1.HasFile Then Try FileUpload1.SaveAs(Server.MapPath("/UPLOADS/" & FileUpload1.FileName))
I have made an application for some customer that I'm going to transfer to a webhotel.I want to make sure that the application is not copied and used elsewhere without my knowledge. So I have thought of stripping the aspx files from their code behind, that is not the aspx.cs file itself. But from all code inside the cs file, not the one that is automatically generated like page_load etc, but everything else. And when done, then just upload the compiled DLL file(s). Does this work? Are there something to be mindful of if I carry out with this plan.
I have developed a web application which contains aspdotnet treeview control. In this treeview control has binded with some database value.. that controls has one parent node and more than one child nodes for each parent node.
my problem is here, when the user clicks the parent node, I need to fire a javascript onclick function before the server side event(SelectedNodeChanged) called..
If I provide javascript to the parnet node when it is binding, then I could not fire the server side event(SelectedNodeChanged).
How to provide onclick javascript event for parent node in treeview control even the parent node has SelectedNodeChanged event.
I have a webpage where users can create a database record and select a file they want to upload to the database server. these files can be big, like 100mb.
I dont want the user to wait, so I want the file to be uploaded in the background. So that they can continue with doing other stuff while the file is being uploaded.
Is BITS the way to go for this? Or is that only for Fatclient development? Any good tuterials ?
If BITS is not the way to go, what are my options? An ajax call to a services with the filelocation?
I've got a project that's going to go on a dedicated server environment. I'll be uploading images to the server, but saving them outside of the virtual folder path of the actual website, like so:
Now, this works fine on my home computer. Is there anything I'll need to do with IIS or ASP.NET (possibly in web.config) for this to work properly on a production machine? Settings or permissions that may need changing?...
It will be on Window 2003 with IIS6 and ASP.NET 3.5 SP1.
and i found it, here http://forums.asp.net/p/1480079/3451771.aspxi can fairly easily code for a general dbase (name, address, etc..)my question here with this code is...where does my dbase info go?
my dbase info dbase name = files tablename = fileTable column names = fileOne, fileTwo, fileThree the file upload object is called "fileupload1" and this all goes with a "submit" button
also, that is pretty much for one file, what if the user is uploading more than one file? do i just add more if/then statements, one for each fileupload object?
I'm using the asyncfileupload control, and have it woking to an extent. I'm able to upload the image to the relevant directory and save it's path to the database.The problem I'm having is that I am unable to upload a 2nd file once the first has completed without refreshing the page.
