WebRequest.RequestUri 屬性

定義

命名空間:

System.Net

組件:

System.Net.Requests.dll

組件:

System.dll

組件:

netstandard.dll

在子代類別中覆寫時，取得與要求相關聯的網際網路資源 URI。

public:
 abstract property Uri ^ RequestUri { Uri ^ get(); };

public:
 virtual property Uri ^ RequestUri { Uri ^ get(); };

public abstract Uri RequestUri { get; }

public virtual Uri RequestUri { get; }

member this.RequestUri : Uri

Public MustOverride ReadOnly Property RequestUri As Uri

Public Overridable ReadOnly Property RequestUri As Uri

屬性值

Uri

， Uri 表示與要求相關聯的資源。

例外狀況

NotImplementedException

當屬性在子代類別中未覆寫時，會嘗試取得或設定該屬性。

範例

下列範例會 RequestUri 檢查 屬性，以判斷原本要求的網站。

// Create a new WebRequest object to the mentioned URL.
WebRequest^ myWebRequest = WebRequest::Create( "http://www.contoso.com" );
Console::WriteLine( "\nThe Uri requested is {0}", myWebRequest->RequestUri);
// Assign the response object of 'WebRequest' to a 'WebResponse' variable.
WebResponse^ myWebResponse = myWebRequest->GetResponse();
      // Get the stream containing content returned by the server.
Stream^ streamResponse = myWebResponse->GetResponseStream();
      Console::WriteLine("\nThe Uri that responded to the request is '{0}'",myWebResponse->ResponseUri);
StreamReader^ reader = gcnew StreamReader(streamResponse);
      // Read the content.
String^ responseFromServer = reader->ReadToEnd();
// Display the content.
Console::WriteLine("\nThe HTML Contents received:");
Console::WriteLine (responseFromServer);
// Cleanup the streams and the response.
reader->Close();
streamResponse->Close();
myWebResponse->Close();

      // Create a new WebRequest Object to the mentioned URL.
      WebRequest myWebRequest=WebRequest.Create("http://www.contoso.com");
      Console.WriteLine("\nThe Uri that was requested is {0}",myWebRequest.RequestUri);
      // Assign the response object of 'WebRequest' to a 'WebResponse' variable.
      WebResponse myWebResponse=myWebRequest.GetResponse();
      // Get the stream containing content returned by the server.
      Stream streamResponse=myWebResponse.GetResponseStream();
      Console.WriteLine("\nThe Uri that responded to the WebRequest is '{0}'",myWebResponse.ResponseUri);
StreamReader reader = new StreamReader (streamResponse);
      // Read the content.
string responseFromServer = reader.ReadToEnd ();
// Display the content.
Console.WriteLine("\nThe HTML Contents received:");
Console.WriteLine (responseFromServer);
// Cleanup the streams and the response.
reader.Close ();
streamResponse.Close ();
myWebResponse.Close ();

' Create a new WebRequest Object to the mentioned URL.
Dim myWebRequest As WebRequest = WebRequest.Create("http://www.contoso.com")
Console.WriteLine(ControlChars.Cr + ControlChars.Lf +"The Uri that was requested is {0}", myWebRequest.RequestUri)
' Assign the response object of 'WebRequest' to a 'WebResponse' variable.
Dim myWebResponse As WebResponse = myWebRequest.GetResponse()
      ' Get the stream containing content returned by the server.
Dim streamResponse As Stream = myWebResponse.GetResponseStream()
Console.WriteLine(ControlChars.Cr + ControlChars.Lf + "The Uri that responded to the request is {0}", myWebResponse.ResponseUri)
' Print the HTML contents of the page to the console. 
Dim reader As New StreamReader(streamResponse)
      ' Read the content.
      Dim responseFRomServer As String = reader.ReadToEnd()
' Display the content.
Console.WriteLine(ControlChars.Cr + ControlChars.Lf +"The HTML Contents received:")
Console.WriteLine (responseFromServer)
' Cleanup the streams and the response.
reader.Close ()
streamResponse.Close ()
myWebResponse.Close ()

備註

在子系類別中覆寫時， RequestUri 屬性會 Uri 包含 方法用來建立要求的實例 Create 。

注意

類別 WebRequest 是類別 abstract 。 執行時間實例的實際行為是由 方法傳 WebRequest.Create 回的 WebRequest 子系類別所決定。 如需預設值和例外狀況的詳細資訊，請參閱 子系類別的檔，例如 HttpWebRequest 和 FileWebRequest 。

給實施者的注意事項

RequestUri必須包含傳遞至 Create(Uri) 方法的原始 Uri 實例。 如果通訊協定能夠將要求重新導向至不同的 URI 以服務要求，則子系必須提供 屬性，以包含實際服務要求的 URI

另請參閱

• RequestUri
• Address