Gets or sets the Content-length HTTP header.
(in System.dll)
Visual Basic (Declaration)
Public Overrides Property ContentLength As Long
Dim instance As HttpWebRequest
Dim value As Long
value = instance.ContentLength
instance.ContentLength = value
public override long ContentLength { get; set; }
public:
virtual property long long ContentLength {
long long get () override;
void set (long long value) override;
}
public override function get ContentLength () : long
public override function set ContentLength (value : long)
Property Value
Type:
System..::.Int64The number of bytes of data to send to the Internet resource. The default is -1, which indicates the property has not been set and that there is no request data to send.
The ContentLength property contains the value to send as the Content-length HTTP header with the request.
Any value other than -1 in the ContentLength property indicates that the request uploads data and that only methods that upload data are allowed to be set in the Method property.
After the ContentLength property is set to a value, that number of bytes must be written to the request stream that is returned by calling the GetRequestStream method or both the BeginGetRequestStream and the EndGetRequestStream methods.
.gif) Note: |
|---|
The value for this property is stored in WebHeaderCollection. If WebHeaderCollection is set, the property value is lost. |
The following code example sets the ContentLength property to the length of the string being posted.
' 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()
// 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( "\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=S"POST";
Console::WriteLine(S"\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(S"firstone= ", inputData);
ASCIIEncoding* encoding = new ASCIIEncoding();
Byte byte1[] = encoding->GetBytes(postData);
// Set the content type of the data being posted.
myHttpWebRequest->ContentType = S"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(S"The value of 'ContentLength' property after sending the data is {0}",
__box(myHttpWebRequest->ContentLength));
// Close the Stream Object*.
newStream->Close();
Windows 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98, Windows CE, Windows Mobile for Smartphone, Windows Mobile for Pocket PC
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
.NET Framework
Supported in: 3.5, 3.0, 2.0, 1.1, 1.0
.NET Compact Framework
Supported in: 3.5, 2.0, 1.0
Reference