C# 实现向Web网站Post数据

以下是一段通过ip138站点的请求，以查询手机归属地的代码：

1. stringpostData="mobile=13824162584&action=mobile";
2. byte[]bs=Encoding.ASCII.GetBytes(postData);
3. WebRequestreq=WebRequest.Create("http://www.ip138.com:8080/search.asp");
4. req.Method="POST";
5. req.ContentType="application/x-www-form-urlencoded";
6. req.ContentLength=bs.Length;
9. using(StreamreqStream=req.GetRequestStream())
10. {
11. reqStream.Write(bs,0,bs.Length);
12. }
14. using(WebResponsewr=req.GetResponse())
15. {
16. //在这里对接收到的页面内容进行处理
17. Encodingencode=System.Text.Encoding.GetEncoding("gb2312");
18. stringtempStr="";
19. stringsb="";
20. StreamreceviceStream=wr.GetResponseStream();
21. while(true)
22. {
23. byte[]read=newbyte[1024];
24. intiBytes=receviceStream.Read(read,0,read.Length);
25. if(0==iBytes)
26. {
27. break;
28. }
29. if(iBytes<read.Length)
30. {
31. byte[]buf=newbyte[iBytes];
32. for(inti=0;i<iBytes;i++)
33. {
34. buf[i]=read[i];
35. }
36. tempStr=encode.GetString(buf);
37. sb+=tempStr;
38. }
39. else
40. {
41. tempStr=encode.GetString(read);
42. sb+=tempStr;
43. }
44. }
45. }