/// <summary> /// /// </summary> static WebProxyHelper() { if (File.Exists(s_Config_ProxyIPConfigPath)) { _webProxyIPList = new HashSet <ProxyIPNode>(XmlSerializeHelper.DeserializeFromXml <List <ProxyIPNode> >(s_Config_ProxyIPConfigPath)).ToList(); } else { _webProxyIPList = null; } }