HttpWebRequest.ContentType Eigenschaft

Definition

Ruft den Wert des Content-type-HTTP-Headers ab oder legt ihn fest.Gets or sets the value of the Content-type HTTP header.

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

Eigenschaftswert

Der Wert des Content-type-HTTP-Headers.The value of the Content-type HTTP header. Der Standardwert ist nullsein.The default value is null.

Beispiele

Im folgenden Beispiel wird die Eigenschaft auf ContentType festgelegt.The following code example sets the ContentType property.

// Set the 'Method' property of the 'Webrequest' to 'POST'.
myHttpWebRequest->Method = "POST";
Console::WriteLine( "\nPlease enter the data to be posted to the (http://www.contoso.com/codesnippets/next.asp) Uri :" );

// Create a new String* Object* to POST data to the Url.
String^ inputData = Console::ReadLine();

String^ postData = String::Concat( "firstone= ", inputData );
ASCIIEncoding^ encoding = gcnew ASCIIEncoding;
array<Byte>^ byte1 = encoding->GetBytes( postData );

// Set the content type of the data being posted.
myHttpWebRequest->ContentType = "application/x-www-form-urlencoded";

// Set the content length of the String* being posted.
myHttpWebRequest->ContentLength = byte1->Length;

Stream^ newStream = myHttpWebRequest->GetRequestStream();

newStream->Write( byte1, 0, byte1->Length );
Console::WriteLine( "The value of 'ContentLength' property after sending the data is {0}", myHttpWebRequest->ContentLength );

// Close the Stream Object*.
newStream->Close();
// Set the 'Method' property of the 'Webrequest' to 'POST'.
myHttpWebRequest.Method = "POST";
Console.WriteLine ("\nPlease enter the data to be posted to the (http://www.contoso.com/codesnippets/next.asp) Uri :");

// Create a new string object to POST data to the Url.
string inputData = Console.ReadLine ();


string postData = "firstone=" + inputData;
ASCIIEncoding encoding = new ASCIIEncoding ();
byte[] byte1 = encoding.GetBytes (postData);

// Set the content type of the data being posted.
myHttpWebRequest.ContentType = "application/x-www-form-urlencoded";

// Set the content length of the string being posted.
myHttpWebRequest.ContentLength = byte1.Length;

Stream newStream = myHttpWebRequest.GetRequestStream ();

newStream.Write (byte1, 0, byte1.Length);
Console.WriteLine ("The value of 'ContentLength' property after sending the data is {0}", myHttpWebRequest.ContentLength);

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

' Set the 'Method' property of the 'Webrequest' to 'POST'.
myHttpWebRequest.Method = "POST"

Console.WriteLine(ControlChars.Cr + "Please enter the data to be posted to the (http://www.contoso.com/codesnippets/next.asp) Uri :")
' Create a new string object to POST data to the Url.
Dim inputData As String = Console.ReadLine()
Dim postData As String = "firstone" + ChrW(61) + inputData
Dim encoding As New ASCIIEncoding()
Dim byte1 As Byte() = encoding.GetBytes(postData)
' Set the content type of the data being posted.
myHttpWebRequest.ContentType = "application/x-www-form-urlencoded"
' Set the content length of the string being posted.
myHttpWebRequest.ContentLength = byte1.Length
Dim newStream As Stream = myHttpWebRequest.GetRequestStream()
newStream.Write(byte1, 0, byte1.Length)
Console.WriteLine("The value of 'ContentLength' property after sending the data is {0}", myHttpWebRequest.ContentLength)
newStream.Close()

Hinweise

Die ContentType-Eigenschaft enthält den Medientyp der Anforderung.The ContentType property contains the media type of the request. Werte, die der ContentType-Eigenschaft zugewiesen sind, ersetzen vorhandene Inhalte, wenn die Anforderung den Content-type-HTTP-Header sendet.Values assigned to the ContentType property replace any existing contents when the request sends the Content-type HTTP header.

Legen Sie die Eigenschaft ContentType auf nullfest, um den Content-type-HTTP-Header zu löschen.To clear the Content-type HTTP header, set the ContentType property to null.

Hinweis

Der Wert für diese Eigenschaft wird in WebHeaderCollection gespeichert.The value for this property is stored in WebHeaderCollection . Wenn WebHeaderCollection festgelegt ist, geht der Eigenschafts Wert verloren.If WebHeaderCollection is set, the property value is lost.

Gilt für: