WebRequest.Proxy Özellik
Tanım
Önemli
Bazı bilgiler ürünün ön sürümüyle ilgilidir ve sürüm öncesinde önemli değişiklikler yapılmış olabilir. Burada verilen bilgilerle ilgili olarak Microsoft açık veya zımni hiçbir garanti vermez.
Bir alt sınıfta geçersiz kılındığında, bu İnternet kaynağına erişmek için kullanılacak ağ ara sunucusunu alır veya ayarlar.
public:
virtual property System::Net::IWebProxy ^ Proxy { System::Net::IWebProxy ^ get(); void set(System::Net::IWebProxy ^ value); };
public virtual System.Net.IWebProxy Proxy { get; set; }
public virtual System.Net.IWebProxy? Proxy { get; set; }
member this.Proxy : System.Net.IWebProxy with get, set
Public Overridable Property Proxy As IWebProxy
Özellik Değeri
IWebProxy İnternet kaynağına erişmek için kullanılacak.
Özel durumlar
özelliği alt sınıfta geçersiz kılınmadığında özelliği almak veya ayarlamak için herhangi bir girişimde bulunulmaktadır.
Örnekler
Aşağıdaki örnek geçerli ağ proxy adresini görüntüler ve kullanıcının yeni bir ağ proxy adresi ve bağlantı noktası numarası atamasına izin verir.
// Create a new request to the mentioned URL.
WebRequest^ myWebRequest = WebRequest::Create( "http://www.contoso.com" );
WebProxy^ myProxy = gcnew WebProxy;
// Obtain the Proxy Prperty of the Default browser.
myProxy = (WebProxy^)(myWebRequest->Proxy);
// Print myProxy address to the console.
Console::WriteLine( "\nThe actual default Proxy settings are {0}", myProxy->Address );
try
{
Console::WriteLine( "\nPlease enter the new Proxy Address to be set " );
Console::WriteLine( "The format of the address should be http://proxyUriAddress:portaddress" );
Console::WriteLine( "Example:http://proxyadress.com:8080" );
String^ proxyAddress;
proxyAddress = Console::ReadLine();
if ( proxyAddress->Length == 0 )
{
myWebRequest->Proxy = myProxy;
}
else
{
Console::WriteLine( "\nPlease enter the Credentials" );
Console::WriteLine( "Username:" );
String^ username;
username = Console::ReadLine();
Console::WriteLine( "\nPassword:" );
String^ password;
password = Console::ReadLine();
// Create a new Uri object.
Uri^ newUri = gcnew Uri( proxyAddress );
// Associate the new Uri object to the myProxy object.
myProxy->Address = newUri;
// Create a NetworkCredential object and is assign to the Credentials
// property of the Proxy object.
myProxy->Credentials = gcnew NetworkCredential( username,password );
myWebRequest->Proxy = myProxy;
}
Console::WriteLine( "\nThe Address of the new Proxy settings are {0}", myProxy->Address );
WebResponse^ myWebResponse = myWebRequest->GetResponse();
// Print the HTML contents of the page to the console.
Stream^ streamResponse = myWebResponse->GetResponseStream();
StreamReader^ streamRead = gcnew StreamReader( streamResponse );
array<Char>^ readBuff = gcnew array<Char>(256);
int count = streamRead->Read( readBuff, 0, 256 );
Console::WriteLine( "\nThe contents of the Html pages are :" );
while ( count > 0 )
{
String^ outputData = gcnew String( readBuff,0,count );
Console::Write( outputData );
count = streamRead->Read( readBuff, 0, 256 );
}
// Close the Stream object.
streamResponse->Close();
streamRead->Close();
// Release the HttpWebResponse Resource.
myWebResponse->Close();
Console::WriteLine( "\nPress any key to continue........." );
Console::Read();
}
catch ( UriFormatException^ e )
{
Console::WriteLine( "\nUriFormatException is thrown->Message is {0}", e->Message );
Console::WriteLine( "\nThe format of the myProxy address you entered is invalid" );
Console::WriteLine( "\nPress any key to continue........." );
Console::Read();
}
// Create a new request to the mentioned URL.
WebRequest myWebRequest=WebRequest.Create("http://www.contoso.com");
WebProxy myProxy=new WebProxy();
// Obtain the Proxy Prperty of the Default browser.
myProxy=(WebProxy)myWebRequest.Proxy;
// Print myProxy address to the console.
Console.WriteLine("\nThe actual default Proxy settings are {0}",myProxy.Address);
try
{
Console.WriteLine("\nPlease enter the new Proxy Address to be set ");
Console.WriteLine("The format of the address should be http://proxyUriAddress:portaddress");
Console.WriteLine("Example:http://proxyadress.com:8080");
string proxyAddress;
proxyAddress =Console.ReadLine();
if(proxyAddress.Length==0)
{
myWebRequest.Proxy=myProxy;
}
else
{
Console.WriteLine("\nPlease enter the Credentials");
Console.WriteLine("Username:");
string username;
username =Console.ReadLine();
Console.WriteLine("\nPassword:");
string password;
password =Console.ReadLine();
// Create a new Uri object.
Uri newUri=new Uri(proxyAddress);
// Associate the new Uri object to the myProxy object.
myProxy.Address=newUri;
// Create a NetworkCredential object and is assign to the Credentials property of the Proxy object.
myProxy.Credentials=new NetworkCredential(username,password);
myWebRequest.Proxy=myProxy;
}
Console.WriteLine("\nThe Address of the new Proxy settings are {0}",myProxy.Address);
WebResponse myWebResponse=myWebRequest.GetResponse();
// Print the HTML contents of the page to the console.
Stream streamResponse=myWebResponse.GetResponseStream();
StreamReader streamRead = new StreamReader( streamResponse );
Char[] readBuff = new Char[256];
int count = streamRead.Read( readBuff, 0, 256 );
Console.WriteLine("\nThe contents of the Html pages are :");
while (count > 0)
{
String outputData = new String(readBuff, 0, count);
Console.Write(outputData);
count = streamRead.Read(readBuff, 0, 256);
}
// Close the Stream object.
streamResponse.Close();
streamRead.Close();
// Release the HttpWebResponse Resource.
myWebResponse.Close();
Console.WriteLine("\nPress any key to continue.........");
Console.Read();
}
catch(UriFormatException e)
{
Console.WriteLine("\nUriFormatException is thrown.Message is {0}",e.Message);
Console.WriteLine("\nThe format of the myProxy address you entered is invalid");
Console.WriteLine("\nPress any key to continue.........");
Console.Read();
}
' Create a new request to the mentioned URL.
Dim myWebRequest As WebRequest = WebRequest.Create("http://www.contoso.com")
Dim myProxy As New WebProxy()
' Obtain the Proxy Prperty of the Default browser.
myProxy = CType(myWebRequest.Proxy, WebProxy)
' Print myProxy address to the console.
Console.WriteLine(ControlChars.Cr + "The actual default Proxy settings are {0}", myProxy.Address)
Try
Console.WriteLine(ControlChars.Cr + "Please enter the new Proxy Address to be set ")
Console.WriteLine("The format of the address should be http://proxyUriAddress:portaddress")
Console.WriteLine("Example:http://moon.proxy.com:8080")
Dim proxyAddress As String
proxyAddress = Console.ReadLine()
If proxyAddress.Length = 0 Then
myWebRequest.Proxy = myProxy
Else
Console.WriteLine(ControlChars.Cr + "Please enter the Credentials")
Console.WriteLine("Username:")
Dim username As String
username = Console.ReadLine()
Console.WriteLine(ControlChars.Cr + "Password:")
Dim password As String
password = Console.ReadLine()
' Create a new Uri object.
Dim newUri As New Uri(proxyAddress)
' Associate the new Uri object to the myProxy object.
myProxy.Address = newUri
' Create a NetworkCredential object and is assign to the Credentials property of the Proxy object.
myProxy.Credentials = New NetworkCredential(username, password)
myWebRequest.Proxy = myProxy
End If
Console.WriteLine(ControlChars.Cr + "The Address of the new Proxy settings are {0}", myProxy.Address)
Dim myWebResponse As WebResponse = myWebRequest.GetResponse()
' Print the HTML contents of the page to the console.
Dim streamResponse As Stream = myWebResponse.GetResponseStream()
Dim streamRead As New StreamReader(streamResponse)
Dim readBuff(256) As [Char]
Dim count As Integer = streamRead.Read(readBuff, 0, 256)
Console.WriteLine(ControlChars.Cr + "The contents of the Html pages are :")
While count > 0
Dim outputData As New [String](readBuff, 0, count)
Console.Write(outputData)
count = streamRead.Read(readBuff, 0, 256)
End While
' Close the Stream object.
streamResponse.Close()
streamRead.Close()
' Release the HttpWebResponse Resource.
myWebResponse.Close()
Console.WriteLine(ControlChars.Cr + "Press any key to continue.........")
Console.Read()
Catch e As UriFormatException
Console.WriteLine(ControlChars.Cr + "{0}", e.Message)
Console.WriteLine(ControlChars.Cr + "The format of the myProxy address you entered is invalid")
End Try
Açıklamalar
özelliği, Proxy isteğin İnternet kaynağına erişmek için kullandığı ağ ara sunucusunu tanımlar. İstek doğrudan İnternet kaynağına değil proxy sunucusu üzerinden yapılır.
Not
sınıfı WebRequest bir abstract
sınıftır. Çalışma zamanında örneklerin WebRequest gerçek davranışı, yöntemi tarafından döndürülen alt sınıf tarafından WebRequest.Create belirlenir. Varsayılan değerler ve özel durumlar hakkında daha fazla bilgi için ve FileWebRequestgibi HttpWebRequest alt sınıfların belgelerine bakın.
Şunlara uygulanır
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