how do I download a large file (via HTTP) in .NET

Posted by nickcartwright on Stack Overflow See other posts from Stack Overflow or by nickcartwright
Published on 2009-07-03T09:19:40Z Indexed on 2010/03/19 19:11 UTC
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I need to download a LARGE file (2GB) over HTTP in a C# console app. Problem is, after about 1.2GB, the app runs out of memory.

Here's the code I'm using:

WebClient request = new WebClient();
request.Credentials = new NetworkCredential(username, password);
byte[] fileData = request.DownloadData(baseURL + fName);

As you can see... I'm reading the file directly into memory. I'm pretty sure I could solve this if I were to read the data back from HTTP in chunks and write it to a file on disk.

Does anyone know how I could do this?

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