title: illegal characters in path error c#
body: <p>I'm trying to download a csv file from the following link but an exception "illegal characters in path error" is thrown at the last line. I believe it's the question mark sign in the link that messes up everything but I have to get it working.. Any suggestions?</p>
  
  <pre><code>string remoteUri = "download.finance.yahoo.com/d/quotes.csv?s=%40%5EDJI,aapl&amp;f=o&amp;e=.csv";
  string fileName = "aapl.csv", myStringWebResource = null;
  // Create a new WebClient instance.
  WebClient myWebClient = new WebClient();
  // Concatenate the domain with the Web resource filename.
  myStringWebResource = remoteUri + fileName;
  // Download the Web resource and save it into the current filesystem folder.
  myWebClient.DownloadFile(myStringWebResource, fileName);
  </code></pre>