JavaScript - Generating File With Ajax And Allow User To Download It?
Nov 16, 2010
I have very similar problem as this: Allowing users to download files - ASP.NET , but in my case I am generating xlsx file with ajax, and on ajax-called aspx page I am using:
[code]....
When this file is generated, control is returned to ajax calling page and from there I wan't to show save file dialog based on this ajax response and allow user to download this generated file. I don't want to save file on disk with ajax called page and then redirect ajax calling page to that file, because of popup blocker in IE. I am using jquery for ajax calls:
I have a file that I need to copy, run a command against the copy that specializes it for the person downloading it, and then provide that copy to a user to download. I'm using ASP.Net MVC2, and I've never done anything like this. I've searched around for the simplest way to do it, but I haven't found much, so I've come up with a plan.
I think what I'll do is generate a guid, which will become the name of a folder I'll generate at the same level of the source file that the copy is made from. I'll then copy the file to that folder, run my command against it, provide a link to the file, and I'll have some service that runs every now and then that deletes directories that are more than a day old.
I have a small form with some static elements that I am able to access with javascript the bring up a popup. 4 textboxes are generated and attached to a updatepanel. I've been trying various methods of validating the contols without generating postback.
I found anytime i registered a javascript to the scriptmanager the page must refresh.
In our application, we allow user to upload documents which can be PDF, Doc, XLS, TXT. Uploaded documents will be saved on web server. We need to display link for each document user uploaded and when user click on that link, it should open relevant document. it is expected to have required software to open relevant documents.
To upload document, we use saveAs method of FileUpload control and it works absolutely fine.Now, how to view it?I believe, i need to copy/download file to local user machine and need to open it using Process.Start.For that i need to find user local temp directory. if i put path.GetTempPath(), it gives me web server directory and copy file there.
I want to allow my user to click on a button that says "download" and then will build a dynamic csv file on the fly and will prompt the user to download. I know how to build the file using a HTTPHandler, but not quite sure the mechanism for delivering the content via download.
I want to create a .doc-file in my code behind and let the user download it somehow. How can this be done in the simplest way without saving the file at the server? I heard MemoryStream can be used but I'm not exactly sure how.
I've always been required show download size next to the file hyperlink. Only the file in question is rebuilt everyday and the file size can change often. So needless to say the size has been wrong for months. I'm not going to update our site daily to display needless info.
instead of
<a href="file.xxx">click here to download (20mb)</a>
I'd prefer
<a href="file.xxx">click here to download [sizeof('file.xxx')]</a>
The best solution would be javascript based or similar.
I've developed a C# Windows forms application that I want to market. I also have a web site built using aspx.net. I would like to have a customer download my application from my website to their machine and install it or save it. I've never tried this before, but it appears to be standard stuff for downloading anything from a web site.
Does anyone know how this is possible? I can retrieve the file, but I cannot figure out or find anywhere online how to prompt the user where he/she wants to download the file to.
I have a gridview that allows the user to export this gridview to excel. Here is my codes but I would like my user to be able to select where to download the file
Protected Sub ExportToExcel(ByVal sender As Object, ByVal e As System.EventArgs) Handles btnExport.Click lblMsg.Visible = True Try Dim objSw As New StreamWriter(txtFileName.Text.Trim + ".xls") 'Dim serverFilePath As String = "D:Excel Files" 'Dim fileStream As New FileStream(serverFilePath, FileMode.Open) 'Dim fileSize As Long = fileStream.Length 'Response.ContentType = "application/octet-stream" 'Response.AddHeader("Content-Disposition", "attachment; filename=""" & txtFileName.Text.Trim & """;") 'Dim fileBuffer As Byte() = New Byte(fileSize - 1) {} 'fileStream.Read(fileBuffer, 0, CInt(fileSize)) 'Response.BinaryWrite(fileBuffer) 'fileStream.Close() 'Response.[End]() Dim objDt As DataTable = DirectCast(Session("Data"), DataTable).Copy() 'Get No Of Column in GridView Dim NoOfColumn As Integer = objDt.Columns.Count...........................
the paying method is by a card or bank account and the customer is not registered to the site so i want to make sure that the customer has downloaded the file successfully after that the system completes the payment operation.
There are files stored in sql server (datatype of column is varbinary in the database).
each record is in one record in that table (FILE_TABLE).
And there is another table (PATH_TABLE) to store the files paths.
for example,
when the user download the folder A (select an item on the tree and click a button on the client side),
there is one sub-folder B and two files A-1 and A-2.
in folder B, there is two files B-1 and B-2.
then, at the code behind (server), the server will get the files from the database and convert them (including the files and subfolders) to a .zip file (or other compressed files)
and then write a response (using the method HttpResponse.BinaryWrite(Byte[] xxx) )
to client side and let the user download.
after the download, the user can extract the compressed file and the structure of the folders and files keep unchanged.
hat's the best way to allow a user to pull down an RDP file, but to do so using AJAX? In other words, I have a hyperlink and I need an RDP file to be downloaded by the user, but without a full page refresh.
I tried to make an AJAX call using the following example for RDP. It seems to work on Chrome and Firefox, but not on any version of IE.
I have a webpage that allows a user to download a specified file. When the file is ready to be fully downloaded (i.e I call the HttpResponse.End or HTTPRepone.Flush) the user is presented with a File Download dialogue.
Is there any way to determine what option the user has selected?
Have they Opened, Saved or Cancelled the File Download once the Flush or End has been sent?
I have struggled with this for the last 2-3 days. I have a tab container control with a update panel surrounding it. On one of the tabs I have allowed the user to upload and download files to a SQL Server database. The upload works fine and the download works fine only when I remove the update panel.
I have tried to implement the solution that's provided at the following location...http://encosia.com/2007/02/23/ajax-file-downloads-and-iframes/I had to modify the code a little bit to fit my scenario but it looks like it would work. Is there another way to download files from a database within a update panel?
If there isn't another way to do this what could be wrong with my code...following the example on the encosia site...
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The code never gets past the if statement with in this java script. Should I put a trigger on the update panel to force a post back. Any help will be appreciated, java script is not my strong point.
I'm building dynamically a series of ImageButton controls, and I want to assign them a hyperlink for downloading files.So say you got a dropdownlist of 3 items 1,2 and 3, if you select 1 it creates one imagebutton and pointrs to fileA, if you select 2 it creates two imagebuttons and the first one points to fileA and the second one to fileB and so on...Everything is wrapped in an UpdatePanel to avoid postbacks.I have a problem binding the download link in the ImageButton.navigateurl, and then downloading it. I don't know how to do it...
I am using VSTS 2008 + C# + .Net 3.5 + Silverlight 3.0 + ASP.Net to develop a Silverlight application (a video media player) in browser and the function is simple, just use MediaElement to play a remote video file.The remote server is Windows Server 2008 + IIS 7.0 + IIS Media Bit Rate Throttling Control.Since the request media URL can be discovered (e.g. from traffic sniffer), and I want to know how to prevent from download directly from the Url? i.e. I want end user to use my Silverlight media player application in browser to play the file, prevent them from download to local directly. Any easy and quick solution or reference code/documents?
I am exporting a datatable to an excel sheet. When the ExportToExcel event is fire it pops up a "file download dialog" asking if I want to open or save. What I want to do is right after user clicks on open, or save I would like to show a modal popup saying "Do you want to finalize this download?".
Here is some code, it all works except it won't show modal popup after exporting to excel. Why won't mpeFinalizeDownload.Show() run unless I comment out the line above it?
