GlobalProxySelection.GetEmptyWebProxy 方法

定义

命名空间:

System.Net

程序集:

System.Net.Requests.dll

Source:

GlobalProxySelection.cs

返回空代理实例。

public:
 static System::Net::IWebProxy ^ GetEmptyWebProxy();

public static System.Net.IWebProxy GetEmptyWebProxy ();

static member GetEmptyWebProxy : unit -> System.Net.IWebProxy

Public Shared Function GetEmptyWebProxy () As IWebProxy

返回

IWebProxy

不包含信息的 IWebProxy。

示例

下面的代码示例创建不使用 WebRequest 代理的实例。

#using <System.dll>

using namespace System;
using namespace System::Net;
using namespace System::IO;
int main()
{
   
   // Create a request for the Web page at www.contoso.com.
   WebRequest^ request = WebRequest::Create( L"http://www.contoso.com" );
   
   // This application doesn't want they proxy to be used so it sets
   // the global proxy to an empy proxy.
   IWebProxy^ myProxy = GlobalProxySelection::GetEmptyWebProxy();
   
   // Get the response.
   WebResponse^ response = request->GetResponse();
   
   // Display the response to the console.
   Stream^ stream = response->GetResponseStream();
   StreamReader^ reader = gcnew StreamReader( stream );
   Console::WriteLine( reader->ReadToEnd() );
   
   // Clean up.
   reader->Close();
   stream->Close();
   response->Close();
   return 0;
}

using System;
using System.Net;
using System.IO;
namespace Examples.Http
{
    public class TestGlobalProxySelection
    {
        public static void Main()
        {
            // Create a request for the Web page at www.contoso.com.
            WebRequest request = WebRequest.Create("http://www.contoso.com");
            // This application doesn't want the proxy to be used so it sets
            // the global proxy to an empty proxy.
            IWebProxy myProxy = GlobalProxySelection.GetEmptyWebProxy();
            GlobalProxySelection.Select = myProxy;
            // Get the response.
            WebResponse response = request.GetResponse();
            // Display the response to the console.
            Stream stream = response.GetResponseStream();
            StreamReader reader = new StreamReader(stream);
            Console.WriteLine(reader.ReadToEnd());
            // Clean up.
            reader.Close();
            stream.Close();
            response.Close();
        }
    }
}

注解

方法 GetEmptyWebProxy 返回一个空白 IWebProxy 实例，指示没有代理用于访问 Internet 资源。

可以分配给 null 成员（如 WebClient.Proxy 属性），而不是调用 GetEmptyWebProxy 方法，该属性指定代表 对象与远程服务器通信的WebClient代理。