HttpWebRequest类对WebRequest中定义的属性和方法提供支持,使用System.Net.WebRequest.Create(URI uriString)来创建实例,返回的是HttpWebRequest对象。GetResponse方法向RequestUri属性指定的资源发出同步请求并返回包含该响应的HttpWebResponse。
下面示例代码来源于微软MSDN官网,绝对经典!
public static byte[] GetURLContents(string url) { // The downloaded resource ends up in the variable named content. var content = new MemoryStream(); // Initialize an HttpWebRequest for the current URL. var webReq = (HttpWebRequest)WebRequest.Create(url); // Send the request to the Internet resource and wait for // the response. // Note: you can't use HttpWebRequest.GetResponse in a Windows Store app. using (WebResponse response = webReq.GetResponse()) { // Get the data stream that is associated with the specified URL. using (Stream responseStream = response.GetResponseStream()) { // Read the bytes in responseStream and copy them to content. responseStream.CopyTo(content); } } // Return the result as a byte array. return content.ToArray(); }