I've been thrown into the middle of this project without knowing all the background. If you've got WTF questions, trust me, I have them too.
Here is the scenario: I've got a bunch of files residing on an IIS server. They have no file extension on them. Just naked files with names like "asda-2342-sd3rs-asd24-ut57" and so on. Nothing intuitive.
The problem is I need to serve up files on an ASP.NET (2.0) page and display the tiff files as tiff and the PDF files as PDF. Unfortunately I don't know which is which and I need to be able to display them appropriately in their respective formats.
For example, lets say that there are 2 files I need to display, one is tiff and one is PDF. The page should show up with a tiff image, and perhaps a link that would open up the PDF in a new tab/window.
The problem:
As these files are all extension-less I had to force IIS to just serve everything up as TIFF. But if I do this, the PDF files won't display. I could change IIS to force the MIME type to be PDF for unknown file extensions but I'd have the reverse problem.
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Is this problem easier than I think or is it as nasty as I am expecting?
when i convert tiff file to pdf in debug mode it converted successfully but when i host it on localhost it didn't convert and throw an exception:
Cann't make pdf files. Try again.System.Runtime.InteropServices.COMException (0x80040154): Retrieving the COM class factory for component with CLSID {71DBCBF1-587B-42E4-9B30-74B80F4AA70F} failed.
When I upload small sized tiff file(approx. 800KB) in my website folder on local system through fileupload control in asp.net. It uploads the file successfully. But when I upload 5MB or more in size tiff file. It can't upload file and display the following message.Internet Explorer cannot display the webpage.Here is my code:
if (FileUpload1.HasFile) { string filename = FileUpload1.PostedFile.FileName.ToString();
My website provides a facility to upload images, using the ASP.NET FileUpload control. We accept both jpeg and tiff formats but I have just decided that all tiffs should be converted to jpegs at the time of upload. If possible, I want to avoid saving the original tiff to disk. I would any sample coding for achieving this conversion prior to saving (ideally in VB.NET, though I could always run C# code through a converter).
My website provides a facility to upload images, using the ASP.NET FileUpload control. We accept both jpeg and tiff formats but I have just decided that all tiffs should be converted to jpegs at the time of upload. If possible, I want to avoid saving the original tiff to disk.
I would appreciate any sample coding suggestions for achieving this conversion prior to saving (ideally in VB.NET, though I could always run C# code through a converter).
I'm developing a website that has modular section. I would like it that when a new aspx (and aspx.cs) file is placed in a subdirectory of the application that I can ask the class some information...The idea is that when the file is placed in the directory a new menu item is added to the menu. To do that I need to "ask the class" for its name, icon, description, etc. Is there a way to determine the class that is defined in codebehind file and to instantiate an instance of it?I know I could look for and parse a config file for each plugin but I would rather not have to go that route.
I am opening and reading and I need to detect the encoding of the file that I am reading. There are different system users who will be using different encoding in their files so I have no control over this.
[Code]....
While the default encoding normally works there are special foreign language (non-English) characters that are not being read correctly, instead there are garbage characters in their place that I see "myString" above. Good foreign characters are visible in the file but the result in myString are unreadable garbage characters that are not valid.
I have researched this and it has been suggested to determine the encoding of the file and then use that encoding, but I have not been able to find out how to to do this.
so in a nutshell: how can I use vb.net to detect the encoding of an excel file?
My question is similar to http://stackoverflow.com/questions/194579/how-to-detect-when-a-user-has-successfully-finished-downloading-a-file-in-php but I have to do the same using IIS, ASP.NET and C#.
None of the methods in the HttpResponse class provide feedback if the data was sent or not, TransmitFile just does its job (or not) and does not provide any means of knowing the result.I was thinking of using the .Filter property but then again, the filter is based on the HttpResponseStream which does also not provide any feedback.
I'm trying to let the user download different documents where the data is stored in an SQL DB. In firefox, the filetype is correctly read, but not in IE. I'm trying to do this without having to set the ".pdf" or whatever extension the document has, because I haven't got that information. I only have the filetype.
dim filepath as string = "http://order/venommain.asp?f=N&username=0E3706&password=0E12Y6&docs=-1&folders=-1&sv=&e=-1&nw=&q1=TITLE+CONTAINS+PDFFILENAME"
response.redirect(filepath) // it works and open PDFFILENAME
But,
System.IO.File.Exists(filepath) alway return false (it should return true)
How to code to detect the file existing in http format?
My users like to upload password-protected Word documents into our custom document management system. I'd like to add a validation to check for the password and refuse the upload if it has a password.
Automating Word - with COM interop - is out of the question because this is a server side application.
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.
I embed wmp, swf, and qt in a modalpopupextender. Some of the video files take a long time to load so a given player's window stays empty for too long. I think I should be able to have the player hidden initially and display an animated gif in the modalpopupextender and then when the video files completes loading I'd hide the gif and show the player (or simply manipulate the corresponding z-indexes).
i have some problem on downloading file which file types are .doc, .docx and .pdf.
I have wrote the code for downloading when the button is click. the button can download these three types of file when click.
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But, i have some weird condition. when i test in my local pc using the firefox, the downloading box popup with the file type detected. but when i upload the code files in live server and test the download button using firefox, the downloading popup but it cannot detect the file type.
therefore, i can proceed the download process using the firefox but i failed to open the files coz it dun have the file type.
I've got a ASP.NET site that's located on a local server (MY_SERVER). And one of the things it does is pull up tiff files which are located on another server (ANOTHER_SERVER). The location of each of these files is stored in SQL. I pull up each of these images and am supposed to display them. The problem is:
the files are not named with a tiff extension (does it matter?) they aren't displaying at all.
I am using an Image control to display these images, and I'm not sure if it matters that the extension is not set (does the image control know the difference between an jpg and a tiff without the extension?)
I am guessing the images aren't displaying because they are not on the same server MY_SERVER that the images are located (ANOTHER_SERVER).
edit: actually displaying the tiff files were amazingly simple:
but because the images are located on ANOTHER_SERVER I still can't access them. I may just do a hack where I copy them to a local directory on MY_SERVER but there's gotta be a simple way to fix this. Anyone?
I am using alternatiff plugin to view tiff in web browser. But my main aim is to disable saving the copy of tiff file in temp internet files folder. and the second is to view some specific 2-3 pages from the entire tiff files. (SECURITY IS THE MAJOR CONCERN) or is there anything alternative which can help me out from thes. I am working on this from last two days but couldnt get to the solution for this.
$('#ExportFrame').attr('src', 'Default.aspx?Export=true'); // ExportFrame is an iframe In IE, I keep getting an error saying "Internet Explorer cannot download Default.aspx from localhost". I thought it might be an issue with loading it in an iframe element, but redirecting to the URL is not working either. The really odd thing is that going to the URL (/Default.aspx?Export=true) does not work the first time, but works every time after that. Again, this works in every browser I've tried except IE.
Update:
The aspx page has the following code to keep the page from getting cached:
// Never cache this page Response.CacheControl = "no-cache"; Response.AddHeader("Pragma", "no-cache"); Response.Expires = -1;
Removing the first 2 lines and leaving only Response.Expires = -1 resolved the issue.
1) I notice that the module gets it's data in chunks. This is problematic for me because I'm using a regex to find and replace. If I get a partial match in one chunk and the rest of the match in the second, it will not work. Is there any way to get the entire response before I do my thing to it? I have seen code where it appends data to a string builder until it uses a matches on an "" end tag but my code must work for more that just (xml, custom tags, etc). I don't know how to detect the End Of Stream or if that is even possible.
I am trying to detect wether or not a client has version 4 of the .net framework installed. Using theRequest.Browser.GetClrVersions() method, I only get versions listed up to 3.5 SP1, but I do not get anything back indicating version 4. Does anyone know how I can determine this?
