myRequest.Proxy = null; 取消代理 framework 3.5以上默认有代理
myRequest.Timeout = 60000; 延时
myRequest.ReadWriteTimeout= 120000; 读写延时
/// <summary>
/// http请求
/// </summary>
/// <param name="data">数据</param>
/// <param name="uri">服务地址 http://localhost:1209/WebService.asmx/RunService</param>
/// <param name="encoding">编码方式 System.Text.Encoding.UTF8</param>
/// <param name="type">提交方式 POST</param>
/// <param name="contentType">数据方式 application/x-www-form-urlencoded</param>
/// <returns></returns>
public static string HttpRequest(string data, string uri, Encoding encoding, string type, string contentType)
{if (String.IsNullOrEmpty(type)) type = "POST";
if (String.IsNullOrEmpty(contentType)) contentType = "application/json";
//Web访问对象，构造请求的url地址
string serviceUrl = uri;//构造http请求的对象
HttpWebRequest myRequest = (HttpWebRequest)WebRequest.Create(serviceUrl);
HttpRequestCachePolicy noCachePolicy = new HttpRequestCachePolicy(HttpRequestCacheLevel.NoCacheNoStore);
myRequest.CachePolicy = noCachePolicy;
myRequest.Headers[HttpRequestHeader.CacheControl] = "no-cache";
myRequest.Timeout = 60000;
myRequest.Proxy = null;
//转成网络流
byte[] buf = encoding.GetBytes(data);
//设置
myRequest.Method = type;
myRequest.ContentLength = buf.LongLength;
myRequest.ContentType = contentType;
using (Stream reqstream = myRequest.GetRequestStream())
{
reqstream.Write(buf, 0, (int)buf.Length);
}HttpWebResponse resp = myRequest.GetResponse() as HttpWebResponse;
System.IO.StreamReader reader = new System.IO.StreamReader(resp.GetResponseStream(), encoding);
string message = reader.ReadToEnd();
reader.Close();
resp.Close();
return message;}