Gets or sets the global HTTP proxy.
(in System.dll)
Visual Basic (Declaration)
Public Shared Property Select As IWebProxy
Dim value As IWebProxy
value = GlobalProxySelection.Select
GlobalProxySelection.Select = value
public static IWebProxy Select { get; set; }
public:
static property IWebProxy^ Select {
IWebProxy^ get ();
void set (IWebProxy^ value);
}
public static function get Select () : IWebProxy
public static function set Select (value : IWebProxy)
| Exception | Condition |
|---|
| ArgumentNullException | The value specified for a set operation was nullNothingnullptra null reference (Nothing in Visual Basic). |
| SecurityException | The caller does not have permission for the requested operation. |
The Select property sets the proxy that all WebRequest instances use if the request supports proxies and no proxy is set explicitly using the Proxy property. Proxies are currently supported by FtpWebRequest and HttpWebRequest.
The following code example sets the Select property to the empty proxy.
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();
}
}
}
#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 <mscorlib.dll>
#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(S"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();
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();
return 0;
}
Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
.NET Framework
Supported in: 3.5, 3.0, 2.0, 1.1, 1.0
.NET Compact Framework
Supported in: 3.5, 2.0, 1.0
Reference