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WebRequest.ContentType 屬性

定義

在子代類別中覆寫時,取得或設定所傳送之要求數據的內容類型。

public:
 abstract property System::String ^ ContentType { System::String ^ get(); void set(System::String ^ value); };
public:
 virtual property System::String ^ ContentType { System::String ^ get(); void set(System::String ^ value); };
public abstract string ContentType { get; set; }
public virtual string? ContentType { get; set; }
public virtual string ContentType { get; set; }
member this.ContentType : string with get, set
Public MustOverride Property ContentType As String
Public Overridable Property ContentType As String

屬性值

要求數據的內容類型。

例外狀況

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

下列範例會將 ContentType 屬性設定為適當的媒體類型。

// Set the 'ContentType' property of the WebRequest.
myWebRequest->ContentType = "application/x-www-form-urlencoded";

// Set the 'ContentLength' property of the WebRequest.
myWebRequest->ContentLength = byteArray->Length;
Stream^ newStream = myWebRequest->GetRequestStream();
newStream->Write( byteArray, 0, byteArray->Length );

// Close the Stream object.
newStream->Close();

// Assign the response object of 'WebRequest' to a 'WebResponse' variable.
WebResponse^ myWebResponse = myWebRequest->GetResponse();

// Set the 'ContentType' property of the WebRequest.
myWebRequest.ContentType="application/x-www-form-urlencoded";

// Set the 'ContentLength' property of the WebRequest.
myWebRequest.ContentLength=byteArray.Length;
Stream newStream=myWebRequest.GetRequestStream();
newStream.Write(byteArray,0,byteArray.Length);

// Close the Stream object.
newStream.Close();

// Assign the response object of 'WebRequest' to a 'WebResponse' variable.
WebResponse myWebResponse=myWebRequest.GetResponse();


' Set the 'ContentType' property of the WebRequest.
myWebRequest.ContentType = "application/x-www-form-urlencoded"

' Set the 'ContentLength' property of the WebRequest.
myWebRequest.ContentLength = byteArray.Length
Dim newStream As Stream = myWebRequest.GetRequestStream()
newStream.Write(byteArray, 0, byteArray.Length)

' Close the Stream object.
newStream.Close()

' Assign the response object of 'WebRequest' to a 'WebResponse' variable.
Dim myWebResponse As WebResponse = myWebRequest.GetResponse()

備註

謹慎

WebRequestHttpWebRequestServicePointWebClient 已經過時,您不應該將它們用於新的開發。 請改用 HttpClient

ContentType 屬性包含要求的媒體類型。 這通常是內容的MIME編碼方式。

注意

WebRequest 類別是 abstract 類別。 運行時間 WebRequest 實例的實際行為是由 WebRequest.Create 方法所傳回的子代類別所決定。 如需預設值和例外狀況的詳細資訊,請參閱子代類別的檔,例如 HttpWebRequestFileWebRequest

適用於

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