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c# 获取网页源码

源码

2015-12-08 C# 1446

C#获取指定网页HTML原代码可使用 WebClient WebRequest HttpWebRequest 三种方式来实现。 WebClient private string GetWebCl

C#获取指定网页HTML原代码可使用 WebClient WebRequest HttpWebRequest 三种方式来实现。

WebClient

		
								private string GetWebClient(string url)
							
								{
							
								string strHTML ="";
							
								WebClient myWebClient =new WebClient();
							
								Stream myStream = myWebClient.OpenRead(url);
							
								StreamReader sr =new StreamReader(myStream, System.Text.Encoding.GetEncoding("utf-8"));
							
								strHTML = sr.ReadToEnd();
							
								myStream.Close();
							
								return strHTML;
							
								}

WebRequest

		
								private string GetWebRequest(string url)
							
								{
							
								Uri uri =new Uri(url);
							
								WebRequest myReq = WebRequest.Create(uri);
							
								WebResponse result = myReq.GetResponse();
							
								Stream receviceStream = result.GetResponseStream();
							
								StreamReader readerOfStream =new StreamReader(receviceStream, System.Text.Encoding.GetEncoding("utf-8"));
							
								string strHTML = readerOfStream.ReadToEnd();
							
								readerOfStream.Close();
							
								receviceStream.Close();
							
								result.Close();
							
								return strHTML;
							
								}

HttpWebRequest

		
								private string GetHttpWebRequest(string url)
							
								{
							
								Uri uri =new Uri(url);
							
								HttpWebRequest myReq = (HttpWebRequest)WebRequest.Create(uri);
							
								myReq.UserAgent ="User-Agent:Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.2; .NET CLR 1.0.3705";
							
								myReq.Accept ="*/*";
							
								myReq.KeepAlive =true;
							
								myReq.Headers.Add("Accept-Language","zh-cn,en-us;q=0.5");
							
								HttpWebResponse result = (HttpWebResponse)myReq.GetResponse();
							
								Stream receviceStream = result.GetResponseStream();
							
								StreamReader readerOfStream =new StreamReader(receviceStream, System.Text.Encoding.GetEncoding("utf-8"));
							
								string strHTML = readerOfStream.ReadToEnd();
							
								readerOfStream.Close();
							
								receviceStream.Close();
							
								result.Close();
							
								return strHTML;
							
								}