We have hosted some downloadable files on our different server due to bandwidth problem.
Now we want to download those files using an ASP script from our current server.
But how could we know the absolute path of that particular server using ASP script ?
regards
sk
Not 100% sure of what you're asking...
If the remote files are within a website on the remote server, you van reference them directly. If they are managed within your application, you may need to build some additional web service/httphandler or "asp" page that retrieves and serves the image (binary write, setting mime type etc)
Related
I know it's been asked and I have read the posts and Googled this all day. Still nowhere near something that works. Using an .aspx page, I need to upload a .pdf file to a specific website. I'm doing development using VS2017 and VB.Net. The app will run on different websites. It needs to upload client files to a specific different website and path. Also, the file name of the uploaded file will not be the same as the local source file. Creating the new name is no problem.
Let's say a local file must be uploaded to a website at https://www.appfileserver.co.za/pdfdocs, but I'm on https://www.myownsite.com. So, when using FileUpload1.SaveAs(rootedpath) the path that goes in there must be the rooted path to the target. What would the rooted path look like for the example I provided?
FYI, I know the IP addresses, http paths and anything else I need to know because I control those sites. It would be great to do an FTP upload. I have done this many times from desktop apps. Unfortunately I'd need the full path to the local file. It seems there is no way a web page is allowed to get that full path, so FTP upload is out - or is there a way?
After battling for two days trying to FTP upload from website to website (which is not possible because server firewalls block this), I finally solved it. The solution was a simple one. I deployed the upload .aspx file on the target server then embedded that in an iframe on the client machine apps. The files are then uploaded one time to the right place. Simple and 100% effective. Hopefully somebody see's this and understands it - so as to avoid the troubles I had.
I am having trouble accessing information on the server my website it on. As the website was originally programmed with VB.Net, I cannot change the language without having to completely reboot the website. The way the website and server are configured, I can only use ASP.Net and VB.Net.
I am needing to add a section where they can create folders, edit folder names, and upload pictures and text documents on the server through the public website. I tried using parts of the FileIO, Server, and Http that should have worked, but none of them did. Most of my research is about local files and text documents.
I have not been able to find any information that works. Can someone help me? Thank you.
Firstly, creating a virtual directory in ISS mapped to somewhere on your disk would be a good start. This way you have a separate folder for user data in a folder with write access (make sure IIS has write access to the folder!), and the folder is not affected by website deployments.
Secondly, you might need to resolve absolute path for most of the System.IO.File calls. See How to convert a relative path to an absolute path in a Windows application?, just you will need to convert this code to VB.
Here's what I would like to accomplish:
I have a file stored in Windows Azure Blob Storage (or for that matter any file which is not on my web server but accessible via a URL).
I want to force download a file without actually downloading the file on my web server first i.e. browser should automatically fetch the file from this external URL and prompts the user to download it.
Possible Solutions Explored:
Here's what I have explored so far (and why they won't work):
Using something like FileContentResult as described here Returning a file to View/Download in ASP.NET MVC to download the file. This solution would require me to fetch the contents on my server and then stream from my server to the browser. For this reason this solution won't work.
Using HTML 5 download attribute: HTML 5 download attribute would have worked perfectly fine however the problem is that while it is really a very neat solution, it is not supported in all browsers.
Changing the file's content type: Another thing I could do (at least for the files that I own) to change the content type property of the file to something that the browser wouldn't understand and thus would be forced to download the file. This might work in some browsers however not in all as IE is smart enough to go beyond the content type and sees the file's content to determine the content type. Furthermore if I don't own the files, then I won't have access to changing the content type of the file.
Simply put, in my controller action I should be able to specify the URL of the file and somehow browser should force download the file.
Is this something which can be accomplished? If yes, then any ideas how I could accomplish this?
Simply put, in my controller action I should be able to specify the URL of the file and somehow browser should force download the file [without exposing the URL of the file to the client].
You can't. If the final URL is to remain hidden, your server must serve the data, so your server must download the file from the URL.
Your client can't download a file it can't get the URL to.
You can create file transfer WCF service (REST) which will stream your content from blob storage or from other sources through your file managers to client browser directly by URL.
https://{service}/FileTransfer/DownloadFile/{id, synonym, filename etc}
Blob path won't be exposed, web application will be free from file transfer issues.
how can we find the path of browser default downloads folder in c# / asp.net?
For example I can get the path of user desktop like :
Environment.GetFolderPath(Environment.SpecialFolder.Desktop)
Thanks..
You can't find that out in a web application. It's up to the user to decide which browser to use and how to configure it and where to save downloaded files by default and you have absolutely no way of interfering or even knowing his choices from a web application.
First of all looking at MSDN on Environment.SpecialFolder there is no download folder, and the reason is that this is different for every browser.
http://msdn.microsoft.com/en-us/library/system.environment.specialfolder.aspx
And there have nothing to do with asp.net, if you look it from the server side you just get a directory on nowhere, meaning that this have nothing to do with the web application that run under the pool.
What you can do
You can use the HttpRuntime.AppDomainAppPath and use it to know where your site lives, and there place a "download" directory and use this full path:
HttpRuntime.AppDomainAppPath + "download/"
for download/upload files.
I'm developing a web application in which users uploads images and I'm keeping the location of the uploaded image path on server. For example:
C:\fix_directory\a8531.jpg
In my page, I want to display this image but I couldn't. I've tried many things but couldn't find a way of doing it.. This directory isn't part of my project because it will be always updated.
What is the effective way of overcoming this problem?
Thank you
You could setup a virtual directory (yourweb.com/images) which points to your images, or even a web (cdn.yourweb.com).
You could also write a HTTP handler or a file handler (.ashx) in ASP.NET to serve your images from that location.
Update
I guess the most effective way of overcoming this problem would be to store the uploaded files simply somewhere in your web directory.
Update 2
I'm definitley sure, the most effective way of overcoming this problem is to have a real IIS or a Visual Studio Development Server and not trying to do anything with the Vista Home Basic pseudo IIS which can do nothing.
The simplest way would be to make fix_directory a virtual directory within your project inside of IIS, and access the images that way.
A more complex approach would be to do something in the lines of pulling in your image via a FileStream, and outputting it to your website via a ResponseStream.
A common way this is achieved is by creating a generic handler (.ashx) that's only responsibility is to output your images.