C# webclient download empty file

It has a number of advantages over WebClient , including more configuration options and it facilitates easier mocking and testing. However, it does have some disadvantages, such as the lack of built-in progress reporting.

In this article, I have covered the two main ways of downloading files using C and the. WebClient makes it really easy to download files, with its high-level API and it is available regardless of what. NET version you are targeting. Use HttpClient whenever you need more control and as the recommended option for new development. Yes, add me to your mailing list. This site uses Akismet to reduce spam. Learn how your comment data is processed.

Home Blog About Contact. How to download files using C 0 May 20, The options When using C there are two main options that. NET provides us with. The Overflow Blog. Who owns this outage? Building intelligent escalation chains for modern SRE. Podcast Who is building clouds for the independent developer?

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The code works but if the file is missing on the site it creates a empty text. If the url var points to a location on the PC, then you could check for existence with System. If it's pointing towards a remote location, then I'm not really sure how to check for its existence beforehand. You could, however, handle the case returned by WebClient and delete the erroneous text.

WebClient does a lot of "automagic". Using this approach you have control over when the downloaded file gets created-- that is after you have started downloading. If the file does not exist on the server, it will error before the file is created. You can add additional error checking before creating the FileStream such as checking expected content type, etc. How are we doing? Please help us improve Stack Overflow. Ssl3; client. Net, but did not help. Olivier Jacot-Descombes Pradeep H Pradeep H 2 2 gold badges 5 5 silver badges 25 25 bronze badges.

Add a comment. Active Oldest Votes. Tls12; client. Tls System. Tls11 System. Evk Evk Thank you for solution and explanation. This worked perfect. Thanks for the fast reply! FDEr Updated the code, now it supports asynchronous downloads as well as progress callback for these asynchronous downloads.

I just implemented this into my project. Although it comes up with an error regarding the sender, e part of the line when calling it. TotalBytesToReceive ; fileDownloader.

WriteLine "Download completed" ;. I've copied the example code directly from Visual Studio after testing it. What does the error message say? Hi, Thanks for the code, very useful.

I just encountered a problem - after downloading 4 small files on a queue using 4 FileDownloader, if I repeat the download queue a few times, I'm getting temp banned from google drive. WebResponse GetWebResponse is returning a user-unhandled web exception from the server: "forbidden". Just me? Is there any walkaround about this? I haven't encountered this issue myself but I don't think we can implement a workaround for this.

Does using a single FileDownloader to download those 4 files one after another change the outcome? If it doesn't, the only possible solution for this issue is to listen to forbidden response and try again every X minutes.

I saw there was a e2. ProgressPercentage was a variable, although it was only returning 0. It returned 0 for a couple seconds, went to , then back to 0 for the rest of the dowload.

Also, e2. TotalBytesToReceive always returns WriteLine e2. ToString ; Sorry for the questions. Yes, unfortunately Drive doesn't provide Content-Length in the header of the download request, so WebClient isn't aware of the filesize until the download is completed.

Googling "drive download header Content-Length" yields this entry , you may try giving it a shot to determine the total file size. Can I reference the python script from my c file and return the int? Do you know how to do that? But thank you so much for this! ToString should work out-of-the-box.

You are the first person that i have found that has a working solutions for everything! That's all the questions from me, thanks again. Quota shouldn't affect the owner of the file, thus you can continue accessing the file when logged in to Drive with your account. Try opening the file in an incognito browser tab, I'm guessing that it won't work. This script doesn't copy the file to another Drive account while downloading it. It attempts to download the file from the provided URL and if Drive presents the "File too large for virus scan" page, the script simulates clicking the "Download anyway" button, hence downloading the file no matter its size.

But when the Drive quota is reached, I'm afraid this script can't bypass that quota error. I can't see any possible reasons for this in the source code. I might be missing something but I just can't see it. That fixed it for me, thanks BigDaffa. Your code was exactly the thing I was looking for and it works perfectly! Well done!! NET experience. You can try using the online C to VB. NET converters, though. Especially if it's about big sized files, we would love to see an auto-resume download functionality in this one!

What do you think? Yes, it would be a useful feature but I'm not planning to implement it myself at the moment. But thanks for the suggestion! If you are trying to learn how to create an interactable button with.

Then, you should be able to implement this feature very quickly. How could i check if the download is done? You can execute your code inside the DownloadFileCompleted callback which is called after the download is done.

Sorry for bothering. I tried to put my direct dowload link here. What should happen, or where it's dowloading.