There are bunch of files stored in a DataBase as varbinary/image data. I am writing a program to extract these file data and send them to the browser so file can be opened or saved. My method is,
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BUT this method creates a file in the Server and then transmit to the browser. Means 100s of files will be created in the server when I open 100s of files with this process, naturally I want to avoid that.
Is it possible to do this without creating a copy of the file in the server ?
I am using some code similar to the code below to open a word document on my ASP.net app. Once the file has been downloaded and opened I then want to either redirect to another page or refresh the screen but nothing works after response.end and if i add it before response.end the browser never downloads the file?
We moved to a new SQL server and I started getting an error on one of my sps only when I ran it from a website. If I manually ran the sp it worked fine. The error I got was this System.Data.SqlClient.SqlException: OLE DB provider 'Microsoft.Jet.OLEDB.4.0' cannot be used for distributed queries because the provider is configured to run in single-threaded apartment mode. I can tell you that this sp does some things, then calls another sp which writes some sql to open an excel file and insert the data. Here is the pseudo
SET @sql = 'INSERT INTO dbo.TempParts (partKey, partKeyNumeric, partKeyAlpha, PartNumber, [Description], Comment, notAvailable ,BatchID)
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 have done this with a dropdown but now i'm trying with a gridview and i'm having lots of problems.
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the delete was working ok when it was a commandfield now he dont do nothing, the donwload file part isnt working, i have something wrong in my code, heres the code behind.
Here is what I need to to. I have a gridview which I have a column that has a link to a pdf file on our file server. When I click the link I need to go into a database and update a column that they clicked the link then I need to open the file. by usinga HyperLinkField I am able to put in the link that I want to go to and when the page is running I can click on the link and it goes to the page and everything works fine except for being able to update the database part.
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I tried using a ButtonField where in the code behind in the GridView1_RowCommand I pull out the file path and put it into a response write statement the problem I'm having with it is that when it opens the file it removes all the ""s so I get the error file cannot be found.
In the past I have always worked from the code behind page in ASP.NET and emitting all of my markup from that area.I am now learning MVC and am working in the .ASPX page directly.
I have a web page with a gridview control and a button for Exporting to Excel
I get following error when exporting to Excel.
"The file you are trying to open, 'someFileName[1].xls, is in a different format than specified by the file extension. Verify that file is not corrupted and is from a trusted source before opening the file. Do you want to open the file now?"
Clicking Yes opens the file. I would like to avoid showing the above error to the users.
Following code is used from the click event. I've left the commented code here to show what I've tried based on results from internet search. I have Microsoft Office Excel 2007 on local PC.
I am currently doing a project that requires the user to click a button on a webpage (C# ASP.net web application) and activate an regular application file (exe, jpg, doc, etc) on a server.
For instance, if I have an excel file on the server. The user would click a button from a webpage and then the excel file will open. The result should be the same as double click the excel file and open it locally.
I'm having problems getting AppendHeader to work properly if I am also using an authorize filter. I'm using an actionfilter for my AJAX actions that applies Expires, Last-Modified, Cache-Control and Pragma (though while testing I have tried including it in the action method itself with no change in results).
If I don't have an authorize filter the headers work fine. Once I add the filter the headers I tried to add get stripped.
When i try to open a csv file from my asp.net 3.5 app by clicking on the link provided, a file download dialog box appears.When i click on the open button from there , i get this eror
C:Documents and settingsUserNameLocal SettingsTemporary Internet FilesContent.IE5X9TXTM06myfilename.csv could not be found .Check the spelling of the file name and verify that the file locationis correct?
Wjy am i getting this error? I am trying to open a file and it complains about file not found in the Temporary Internet Folder.I tried deleting the temp intrnet files.Dint work.I have IE 7 on xp professional sp3. Also i am streaming the file from the application. This happens only to some files and the rest of the files , i can open .
I've recently developed a web user control that lists a series of reports. When the user clicks on the report it serves back a CSV file download in the response stream using the following code:
The code initially worked fine in all browsers. Then the client put a requirement to use SSL for the site. As part of this I introduced a global handler to update the protocol from HTTP to HTTPS for all requests as follows:
However, since securing the site using SSL the CSV file downloads no longer work for IE although they do continue to work for Firefox / Chrome / Safari.
Is there something I am missing in the headers that is unique to IE in order for the file response to work correctly?
The message I receive from IE is:
"Internet Explorer cannot download Reports.aspx from .... in ......
Internet Explorer was unable to open this Internet site. The requested site is either unavailable or cannot be found. Please try again later."
UPDATE:
Here is some example fiddler output coming back from the page request which looks like it's serving correctly. Why doesn't IE understand that it's just been served a file?
HTTP/1.1 200 OK Date: Tue, 09 Nov 2010 14:23:50 GMT Server: Microsoft-IIS/6.0[code].....
After upload a pdf file (order.pdf) to remote server in UNC format, I used code below to open order.pdf file.Code is working in IE9 but not Chrome.Is there another way to open pdf file in remote server?
Dim fullpath As String = [String].Format("file:///{0}", "webserverorderorder.pdf") Response.Redirect(fullpath)
Basically I have to generate a rather large XPS document serverside and send this back to the client.
The issue I have whilst trying to do this is because the XPS document needs to be created on a STA thread, so either the response is sent back before the async operation is complete (in which case I can't attach the file using the transferfile method) OR I have to wait until the Async thread has completed and then I can send the file using the transferfile method (but this leaves the current page locked out for quite a while).
How can I make a Response.Redirect open in a new page? I guess it would be the ASP.NET equivalent of <a href="page.aspx" target="_blank">click here</a>. I have a lot of code on an OnClick event handler and it redirects at the end of the code. It would make it very simple if there was a way to do it in ASP.NET.
I've created 2 web user controls. A = User control that displays an image, and B is the user control that hosts A. I'm trying to stream an array of bytes to A, but it seems like the Response.BinaryWrite method completely overwrites any heirachial controls (I can't see any of B's other controls besides the image).
How do I get A to just display the image from the byte stream? It doesn't come from a database, it's an image I created on the fly.
In code below, when I have more than one DIV open and I choose to sort one of the GridViews, all the other Open Div's will close automatically. How can i keep the DIV's in the state they are in when I sort any GridView?