HttpListenerRequest.ContentType 屬性

定義

命名空間:

System.Net

組件:

System.Net.HttpListener.dll

來源:

HttpListenerRequest.cs

取得要求中所包含之主體資料的 MIME 類型。

public:
 property System::String ^ ContentType { System::String ^ get(); };

public string? ContentType { get; }

member this.ContentType : string

Public ReadOnly Property ContentType As String

屬性值

String

String，包含要求之 Content-Type 標頭的文字。

範例

下列程式碼範例示範如何使用這個屬性。

public static void ShowRequestData (HttpListenerRequest request)
{
    if (!request.HasEntityBody)
    {
        Console.WriteLine("No client data was sent with the request.");
        return;
    }
    System.IO.Stream body = request.InputStream;
    System.Text.Encoding encoding = request.ContentEncoding;
    System.IO.StreamReader reader = new System.IO.StreamReader(body, encoding);
    if (request.ContentType != null)
    {
        Console.WriteLine("Client data content type {0}", request.ContentType);
    }
    Console.WriteLine("Client data content length {0}", request.ContentLength64);

    Console.WriteLine("Start of client data:");
    // Convert the data to a string and display it on the console.
    string s = reader.ReadToEnd();
    Console.WriteLine(s);
    Console.WriteLine("End of client data:");
    body.Close();
    reader.Close();
    // If you are finished with the request, it should be closed also.
}

Public Shared Sub ShowRequestData(ByVal request As HttpListenerRequest)
    If Not request.HasEntityBody Then
        Console.WriteLine("No client data was sent with the request.")
        Return
    End If

    Dim body As System.IO.Stream = request.InputStream
    Dim encoding As System.Text.Encoding = request.ContentEncoding
    Dim reader As System.IO.StreamReader = New System.IO.StreamReader(body, encoding)

    If request.ContentType IsNot Nothing Then
        Console.WriteLine("Client data content type {0}", request.ContentType)
    End If

    Console.WriteLine("Client data content length {0}", request.ContentLength64)
    Console.WriteLine("Start of client data:")
    ' Convert the data to a string and display it on the console.
    Dim s As String = reader.ReadToEnd()
    Console.WriteLine(s)
    Console.WriteLine("End of client data:")
    body.Close()
    reader.Close()
    ' If you are finished with the request, it should be closed also.
End Sub

備註

如果用戶端在要求中包含本文資料，它會宣告多用途網際網路郵件延伸模組 (MIME) 標頭中 Content-Type 本文資料的型別。 例如，使用 POST 方法從 Web 表單傳回的預設 MIME 類型為 application/x-www-form-urlencoded 。

如需要求標頭的完整清單，請參閱 HttpRequestHeader 的 https://www.rfc-editor.org 列舉和 RFC 2616。

ContentType當要求中沒有 Content-Type 標頭時， 為 null。

另請參閱

• HttpListener
• HttpListenerContext
• HttpListenerResponse