WebResponse.ResponseUri 屬性

定義

命名空間:

System.Net

組件:

netstandard.dll, System.Net.Requests.dll

來源:

WebResponse.cs

當在衍生類別中覆寫時，會取得實際回應請求的網際網路資源的 URI。

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

public virtual Uri ResponseUri { get; }

member this.ResponseUri : Uri

Public Overridable ReadOnly Property ResponseUri As Uri

屬性值

Uri

包含實際回應請求的網際網路資源 URI 的類別實例 Uri 。

例外狀況

NotSupportedException

當屬性未在子系類別中覆寫時，會嘗試取得或設定 屬性。

範例

以下範例利用該 ResponseUri 性質來判斷其 WebResponse 起源地。

Uri ourUri = new Uri(url);            

// Create a 'WebRequest' object with the specified url. 
WebRequest myWebRequest = WebRequest.Create(url); 

// Send the 'WebRequest' and wait for response.
WebResponse myWebResponse = myWebRequest.GetResponse(); 

// Use "ResponseUri" property to get the actual Uri from where the response was attained.
if (ourUri.Equals(myWebResponse.ResponseUri))
    Console.WriteLine("\nRequest Url : {0} was not redirected",url);   
else
    Console.WriteLine("\nRequest Url : {0} was redirected to {1}",url,myWebResponse.ResponseUri);   
// Release resources of response object.
myWebResponse.Close();

Dim ourUri As New Uri(url)
' Create a 'WebRequest' object with the specified url. 

Dim myWebRequest As WebRequest = WebRequest.Create(url)

' Send the 'WebRequest' and wait for response.
Dim myWebResponse As WebResponse = myWebRequest.GetResponse()

' "ResponseUri" property is used to get the actual Uri from where the response was attained.
If ourUri.Equals(myWebResponse.ResponseUri) Then
    Console.WriteLine(ControlChars.Cr + "Request Url : {0} was not redirected", url)
Else
    Console.WriteLine(ControlChars.Cr + "Request Url : {0} was redirected to {1}", url, myWebResponse.ResponseUri)
End If 

' Release resources of response object.
myWebResponse.Close()

備註

該 ResponseUri 屬性包含實際提供回應資料的網際網路資源的 URI。 若底層協定允許重定向請求，該資源可能不是最初請求的 URI。

Note

這 WebResponse 堂課就是一 abstract 堂課。 執行時實例的實際行為 WebResponse 由回 WebRequest.GetResponse傳的後代類別決定。 如需更多關於預設值與例外的資訊，請參閱後代類別的文件，如 HttpWebResponse 和 FileWebResponse。