Web Forms :: After Client Download Then Server Delete FileExcel?
May 19, 2010
I've problem when I Export my data to Excel and response to Client.
I want :
When Client Downloaded File Excel, On server will delete that file. Current, when Export, on my Server will genaral an Excel File and I call Response.Redirect(fileExcel), Client enable Download that file.
But, If I don't delete that file on server then my server will full by time.Whether any way to download from FileStream Or something the same?
Or any body have an other way to after Client Download then Server delete fileExcel?
I am using the code below to enable clients to download a .csv file from my server.
The problem I am having is that when the file is saved to the client computer the file name is prefixed and suffixed with an underscore which leads to a file type of .csv_ which is obviously not a recognised file type.
How can I strip the underscores from the file name at the transmit stage?
Dim FileName As String = LstBox1.SelectedItem.ToString Dim FilePath As String = "~/temp" & FileName Response.Clear() Response.ContentType = "text/csv" Response.AddHeader("Content-Disposition", "attachment; filename=" & FileName & "") Response.TransmitFile(FilePath) Response.End()
i am downloading a file from a server and i plan to delete the file that i have downloaded on the server after it gets downloaded on the client side. My download code is working fine but i dont know when to put the command to delete the file.
string filepath = restoredFilename.ToString(); // Create New instance of FileInfo class to get the properties of the file being downloaded FileInfo myfile = new FileInfo(filepath); // Checking if file exists if (myfile.Exists) { // Clear the content of the response Response.ClearContent(); // Add the file name and attachment, which will force the open/cancel/save dialog box to show, to the header Response.AddHeader("Content-Disposition", "attachment; filename=" + myfile.Name); //Response.AddHeader("Content-Disposition", "inline; filename=" + myfile.Name); // Add the file size into the response header Response.AddHeader("Content-Length", myfile.Length.ToString()); // Set the ContentType Response.ContentType = ReturnExtension(myfile.Extension.ToLower()); //// Write the file into the response (TransmitFile is for ASP.NET 2.0. In ASP.NET 1.1 you have to use WriteFile instead) Response.TransmitFile(myfile.FullName); // End the response Response.End(); }
Now i know the response.End() will stop every thing and return the value, so is there another way too do so. I need to call a function
DeleteRestoredFileForGUI(restoredFilename);
to delete the file but dont know where to put it.. i tried putting before and after Response.End() but it does not work.
I'm trying to do the following in ASP.NET (with c#):
1. On page Load, download an XML file from a different website to the IIS server, in a subdirectory of the application directory called "downloadedFiles"
I know that WebClient.DownloadFile() can download a file, but this only seems to download the file to the client's machine. I am interested in downloading it to the actual IIS server (so that it can be utilized throughout the lifetime of more than one session). Does anyone know how this could be performed?
Specifically, I'm trying to download an XML file from a website (as an example: [URL]) . How could I download that XML file onto my actual IIS server?
How do i download a file from server to the client pc using asp.net, im using c# with vs 2005. I have tried with WebCient but it is downloading on the server itself. I want to download a particular file to the client PC.
I have the developers edition of sql server 2008 on my local machine (I have an msdn subscription). I would like to download and use r2 client, which I understand is superior to the standard client) but not the express database. Do I want the "SQL Server 2008 R2 Express with Management Tools " (doesnt sound like what I want) or the "SQL Server 2008 R2 Management Studio Express" (does sound like what I want, and is about 100M smaller, so I assume doesnt load the database). Of course I am assuming that the r2 client connects with no problems to a non-r2 database.
Assume a simple aspx data entry page in which admin user can upload an image as well as some other data. They are stored in database and the next time admin visits that page to edit record, image data fetched and a preview generated and saved to disk (using GDI+) and the preview is shown in an image control.
This procedure works fine for the first time however if the image changes (a new one uploaded) the next time the page is surfed it shows previously uploaded image. I debugged the application and everything works correct. The new image data is in database and new preview is stored in Temp location however the page shows previous one. If I refresh the page it shows the new image preview. I should mention that preview is always saved to disk with one name (id of each record as the name).
I think that is because of IE and other browsers use client cache instead of loading images each time a page is surfed. I wonder if there is a way to force the client browser to refresh itself so the newly uploaded image is shown without user intervention.
I believe this question has been asked before but I still couldn't find the appropriate answer.
My scenario is like this:
When the user click on a button, it will dynamically generate a .xls and prompt the user to download.I have used transmitfile but it doesn't allows the file to be deleted. I have also used outputstream.write but it doesn't delete the file after flush. Instead it will hold onto the .xls and no modification can be done to the file.
i have made csv on the server like this: string Expath = @"d:A.csv"; protected void Button3_Click(object sender, EventArgs e) { FileStream FS = null; StreamWriter SW = null; try { FS = new FileStream(Expath, FileMode.OpenOrCreate, FileAccess.ReadWrite, FileShare.ReadWrite); SW = new StreamWriter(FS, Encoding.Default);..............
is it correct to make this file on `d:` on the server ? if not where is better to place hem? how do to that the client can download this file after he made it ? (asp.net C#)
What is Web services? What is Web services? How can I Transfer the data from server to client and client to server using XML. Need one simple Example program(C# web Application) ...
suppose when user click on link or button for downloading file in asp.net then download start.so i just want to know how to detect that the file as been downloaded in client machine.is it possible to track from server side code. because i want to develop a file download sectionfrom where user at a time can download only single file. so in this case when file download starti will just capture client ip and store it in session and so when user click on another link to download another fileat the same when another file is downloading so in this situation i will check file is downloading from this ip and if yesthen i will reject user request and tell him that sorry already a file is downloading so try after when this download willbe over. when file download will be over then i will clear that session and in this way my purpose will be solved andrestric user to downlolad multiple file.this type of things is used in rapidshare,hotfile etc. so i just implement this
i have this WCF application which is hosted as a windows service. This service has to download mails which have CSV attached to them from a pop3 account. After getting that CSV i have to delete that mail from the pop3 account so that it is not downloaded again. How can i do it?
I'm converting a bunch of FOXPRO / FOXWEB apps to ASP.NET.
The underlying DB is still foxpro (for the moment).
I am passing a table to some VB.NET code that I want to have converted to a CSV file and sent back to the client for download. And it works! Sort of ... It works sometimes, but at other times, instead of asking me if I want to download the CSV file, it just spews the file to the browser window.
On the asp side, I am passing the response object, the table and the csv file name.
I am storing files in SQL using FileStream from a ASP .NET app. I am also storing the filetypes.
I want to allow users to download (and open these files) to view them. I see a lot of code samples on how I can read data out of FileStream, and put it into a buffer in memory. I guess from there, I can write it out to a file.
But since the data is already in a file (SQL "Select myFileStreamColumn.FilePath()" returns it's location) can't I somehow put up a Save As... dialog for the user, and let them download it directly from the SQL storage area to their local PC?
Do I have to read the data out of SQL, write it out to a file, and then give them a Save As... dialog pointing to that new file?
i want to show info like how much time will be requited to download file in client machine. every client will have different internet speed so how can i detect and show time required to download file in client machine. is it possible in asp.net.
if in the code behind, I set the label to "You must enter a value if the textbox is empty" to validate it on the server side and this is fine, but if javascript is enabled, I don't want to show the client side validation and the server side label together. Is this something where I would just have to disable the client-side validators if javascript was enabled?
