WebClient is very slow

Question

I have problem with Webclient.

It is very slow. It takes about 3-5 seconds to downloadString from one website. I don\'t have any network problems.

This is my

Answer 1

There may be two issues at hand here (that I've also noticed in my own programs previously):

• The first request takes an abnormally long time: This occurs because WebRequest by default detects and loads proxy settings the first time it starts, which can take quite a while. To stop this, simply set the proxy property (WebRequest.Proxy) to null and it'll bypass the check (provided you can directly access the internet)
• You can't download more than 2 items at once: By default, you can only have 2 simultaneous HTTP connections open. To change this, set ServicePointManager.DefaultConnectionLimit to something larger. I usually set this to int.MaxValue (just make sure you don't spam the host with 1,000,000 connections).