TryCreate and a Uri. Value, UriKind. I've tried to do a File. Exists uri. ToString to verify that the uri has a valid file associated to it although this fails even for valid url's.
Is there any other way to validate that the file actually exists so I don't download all these unnecessary corrupt jpeg files? Sorry I should of been more clear. The url that I've been provided is invalid and therefore redirects to a page not found page or similar so in that case I don't want to download as there is no valid jpeg image in that file. I found the following solution:.
Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. Asked 8 years ago. Active 8 years ago. Viewed 2k times. Add a comment. When you download a file from the Internet then Windows will mark it as blocked by default. If you use Windows Explorer to look at the file's properties you'll likely see an Unblock button.
That means Windows has blocked it and therefore it cannot be executed. Refer to this link to see if they can help you work around it. Unfortunately, the file isn't blocked. Another thing I forgot to note, is that after the program gets executed, it says that it's a for a Bit computer and of course, it's unsupported.
I got no idea why it's doing this. I've tried 3 different file storage sites and all have the same problem. How the auto updater works, is basically when the program is launched, it checks a pastebin link, and if the text file contains a new version, it launches the auto updater.
The auto updater deletes the old. Again, this just started happening today, after I updated my program. I mean If I download the file manually it works fine, if it's downloaded by the webclient it's corrupted and Bit for some reason. The code is down below. DownloadFile is the correct method for WebClient. I wonder if something else is going on. Note that exceptions are ignored inside Load. Can you move this logic to a method that is called after the form loads and see if you're actually getting an exception or something?
I also wonder about encoding of the file but if you go to that URL and it works then it seems correct. But maybe you need to pass some additional headers? I don't know anything about app. Yes I can try to redo the code a bit. Also, the URL is the direct link to the download, so when you click it, it already starts downloading. The program won't work without a few DLL's. If you try to download it anyways, windows defender will delete it because it thinks it's a virus for some reason.
You can try to run the code but it would be too much of a hassle. You would need 2 separate programs since a program cant delete itself. It's just really weird that yesterday I got up and it didn't work anymore.
Like when it was working windows still detected it as a virus but now it's not working at all. Also, down below is the output. When I run it I get an exception - A required privilege is not held by the client.
Can you take the code I posted and run it on your machine and see if it downloads the file? It says that program has more then one entry point defined. I am really really tired and school just kinda screwed up my brain for today. Code is below thank you. Create a new Console Application project in Visual Studio.
Then replace the generated Program class code with what I posted. Then run it in the debugger and see if the file downloads correctly or you get an error. Sounds like the error I was seeing. Put a breakpoint on the download and then run it in the debugger. You should then be able to step and see the exception. You said it worked before but suddenly stopped working. Given the error it sounds like a permission has changed on the remote endpoint.
It appears that the url that you are using does not support downloading of this information as a PDF. You could try downloading the MSDS from a different site, for example the code below works with a different url. Stack Overflow for Teams — Collaborate and share knowledge with a private group. Create a free Team What is Teams? Collectives on Stack Overflow. Learn more. File is corrupt Ask Question. Asked 7 years, 1 month ago. Active 7 years, 1 month ago.
Viewed 2k times. DefaultCredentials; wc. I've also tried the DownloadFile method. But then an error is thrown: A first chance exception of type 'System. WebException' occurred in System. WebException: An exception occurred during a WebClient request. SocketException: An invalid argument was supplied at System.
Initialize at System. UnsafeUpdateFromRegistry at System. GetSection End of inner exception stack trace at System. GetSection at System. Create Uri Uri at System. Create Uri requestUri at System.
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