How to: Typecast a WebRequest to Access Protocol Specific Properties
This example shows how to typecast a WebRequest so that you can access protocol specific properties.
使用例
HttpWebRequest httpreq =
(HttpWebRequest) WebRequest.Create("https://www.contoso.com/");
Dim httpreq As HttpWebRequest = _
CType(WebRequest.Create("https://www.contoso.com/"), HttpWebRequest)