c #webrequest挂起

Question

我正在开发一个多次调用网址的项目

request = (HttpWebRequest)WebRequest.Create(url);
request.GetResponse();    

这是我的代码。它处于一个循环中，它可以工作2次，但在第三次迭代时它会挂起。没有崩溃或错误。请帮忙。任何帮助将不胜感激。

错误：等待20分钟后。

System.Net.WebException was unhandled
Message=The operation has timed out
Source=System
StackTrace:
   at System.Net.HttpWebRequest.GetResponse()
   at ConsoleApplication1.Program.Main(String[] args) in C:\WorkSpace\ConsoleApplication1\ConsoleApplication1\Program.cs:line 48
   at System.AppDomain._nExecuteAssembly(RuntimeAssembly assembly, String[] args)
   at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args)
   at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly()
   at System.Threading.ThreadHelper.ThreadStart_Context(Object state)
   at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state, Boolean ignoreSyncCtx)
   at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state)
   at System.Threading.ThreadHelper.ThreadStart()

InnerException：

Answer 1

尝试以下方法：

var response = request.GetResponse();
//do stuff with response
response.Close();

WebResponse实例保存活动连接，您必须在建立新连接之前关闭该连接。

您也可以使用using子句执行此操作，这完全取决于您：

using (var response = request.GetResponse())
{
    //do stuff with response
}