HttpWebRequest.ContentType Właściwość

Definicja

Pobiera lub ustawia wartość nagłówka HTTP elementu Content-type.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

Wartość właściwości

Wartość nagłówka HTTP elementu Content-type.The value of the Content-type HTTP header. Wartością domyślną jest null.The default value is null.

Przykłady

Poniższy przykład kodu ustawia właściwość ContentType.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()

Uwagi

Właściwość ContentType zawiera typ nośnika żądania.The ContentType property contains the media type of the request. Wartości przypisane do właściwości ContentType zastąpią wszelkie istniejące zawartość, gdy żądanie wyśle Content-type nagłówku HTTP.Values assigned to the ContentType property replace any existing contents when the request sends the Content-type HTTP header.

Aby wyczyścić Content-type nagłówku HTTP, ustaw właściwość ContentType na null.To clear the Content-type HTTP header, set the ContentType property to null.

Uwaga

Wartość tej właściwości jest przechowywana w WebHeaderCollection.The value for this property is stored in WebHeaderCollection . Jeśli ustawiono WebHeaderCollection, wartość właściwości zostanie utracona.If WebHeaderCollection is set, the property value is lost.

Dotyczy