Downloading files in c#

By using the await keyword when calling the DownloadFileTaskAsync method, the code will wait until the file download has completed, while at the same time carrying out the download asynchronously and firing the progress events. Note that whatever method you use the above code within needs to be marked with the async keyword. Before attempting to use the HttpClient class, make sure you have the appropriate using statement in place, as follows. Note that even though HttpClient implements IDisposable it is recommended that you create one instance of HttpClient and reuse this throughout your program to avoid problems such as socket exhaustion.

As you can see from the above example, the code required to download a file using HttpClient is a little lower level compared to using WebClient , since we need to work with streams directly.

Nonetheless, the code is still straightforward to follow along with. Note that as per the previous example, whatever method you use the above code within needs to be marked with the async keyword. For any new development work, it is recommended that you use HttpClient. 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.

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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. WebClient Since the very first versions of the. Hi, thank You for sharing Your code. Everything works fine, as expected. With above code when I click button second time after first download finish nothing happens. Hopefully you can help.

When I click my button to start the whole process I just instantly get the Download complete message box but nothing has downloaded. Do you know which direction to point me in? Thank you in advance. Ahhh Im dumb and figured it out! Lets say I want to download 3 files at once using one button. How would I got about doing this that after one finishes the next starts! I do appreciate it! Hi, very nice Stuff. But what i need to insert, if i must use a proxy?

Its a company-wide rule, and i can not see the settings, i do not need any User or PW, just using the system settings for the Proxy. Any hints? Thank Thee. The Proxy in the company is automaticly configures by a script that the normal user can not touch. OK, seems to be a Problem with httpS-Connections. If i try to reach http-Server it works.

I have gotten the code and its working mostly… When you goto download the file it makes not attempt to download it. It just says that the file has been downloaded. All the Lables and Buttons also the loading bar are named correct and Im getting no errors.

Its just not downloading. Any Ideas? If I want to Download a file to the applications executing directory with a set URL to download the file. How to upload a file in windows application and also i have to show how much it is upload in progress bar , please help me out. Thank You For Above Coding But in my application i have to upload file with percentage as you have done in this application please help me. I am using above code but my downloaded file is of 0 Kb in size.

To cancel the async operation of a WebClient object you will need to use its CancelAsync method. Xlsx I can not open please help me. I have another question. How can I Back the download complete bool flag to main thread? Depends what you want to do exactly. If you simply want to announce to the user that the download has been completed when the downloading is taking place in another thread you will need to invoke that control.

Hey, at beginning sorry for my English. When I add. The idea is to monitor how much bytes have been downloaded in order to know how many bytes to skip when you are resuming the download. Something is missing. Thanks anyway. I am regular visitor, how are you everybody? This piece of writing posted at this web site is really good. I have one c based application. Wow, marvelous blog layout! How long have you been blogging for? The overall look of your web site is fantastic, as well as the content!

Your email address will not be published. Home Contact Us. How to register a global hotkey for your application in C Register a hotkey for your application that can be triggered even if your form is minimized and does not have focus. Visual Studio Visual Studio is now available. How to download a file in C progressbar and download speed Learn how to download files in C while displaying the percentage and the download speed.

UDP hole punching implementation in C Learn how to implement UDP hole punching so you can make your clients life a lot easier by not forcing them to open ports on their end. This is the example form of what to expect when you have the code in place: On to some code!

First we need to import three new namespaces in addition to the ones we already have. Diagnostics ;. Net ;. Start ;. Show ex. Message ;. ToString "0. ProgressPercentage ;. Reset ;. Show "Download has been canceled. Note: Although you use asynchronous method, it can block the main thread for a while.

If you use directly IP instead of domain name, the DownloadFileAsync method will be fully asynchronous. Menu: Homepage Contact. Download Files from Web [C ] This example shows how to download files from any website to local disk.