WebClient.DownloadData returns 404 file not found. What causes this?
<p>I can open an image from <code>WebClient.DownloadData</code> but for some urls which am able to open via web-browser, can't able to get image byte array if used via WebClient.DownloadData.</p>

<p>If i can view via browser, why do i get http 404 file not found exception. </p>

<pre><code>WebException was unhandled.

The remote server returned an error: (404) Not Found.
</code></pre>

<p>Thanks.</p>
