webClient.DownloadFile() return 404

Question

browser download file with this url ok, but webClient return 404

 string url = "http://zakupki.gov.ru/44fz/filestore/public/1.0/download/priz/file.html?uid=19CC93BEA67C4650B51D69CAA28CB27D";      
 using (var webClient = new WebClient())
        {                          
            webClient.DownloadFile(url , "name");
        }

Answer 1

There is the difference between the request done by the Web Browser and the request form the WebClient.

You need to add this to your code:

webClient.Headers.Add("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; .NET CLR 1.0.3705;)");

So your code will be changed to this:

string url = "http://zakupki.gov.ru/44fz/filestore/public/1.0/download/priz/file.html?uid=19CC93BEA67C4650B51D69CAA28CB27D";
using (var webClient = new WebClient())
{
  webClient.Headers.Add("user-agent", "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; .NET CLR 1.0.3705;)");
  webClient.DownloadFile(url, "name.docx");
}

I hope it helps you