ContentTransferEncoding Property
Topic Last Modified: 2006-06-13
Defines the encoding mechanism used when sending an implementing object's contents over the network.
Applies To
Type Library
Microsoft CDO for Exchange 2000 Library
DLL Implemented In
CDOEX.DLL
Syntax
Property ContentTransferEncoding As String
HRESULT get_ContentTransferEncoding(BSTR* pVal);HRESULT put_ContentTransferEncoding(BSTR Val);
Parameters
- pVal
Returns the value of the ContentTransferEncoding property as a reference to a BSTR.
- Val
Sets the value of the ContentTransferEncoding property to the value of the BSTR.
Remarks
The ContentTransferEncoding property corresponds to the Content-Transfer-Encoding Multipurpose Internet Mail Extensions (MIME) header field of RFC 2045.
This property corresponds to the urn:schemas:mailheader:content-transfer-encoding field for the object. You can therefore set this field using the ContentTransferEncoding property on the interface or by updating the value using the Fields collection
Collaboration Data Objects (CDO) defines the following string constants and mechanisms for use with the ContentTransferEncoding property.
CdoEncodingType Module Constants
| Constant | Value | Meaning |
|---|---|---|
cdo7bit |
"7bit" |
Simple 7-bit ASCII |
cdo8bit |
"8bit" |
8-bit coding with line termination characters |
cdoBase64 |
"base64" |
3 octets encoded into 4 sextets with offset |
cdoBinary |
"binary" |
Arbitrary binary stream |
cdoMacBinHex40 |
"mac-binhex40" |
Macintosh binary to hex encoding |
cdoQuotedPrintable |
"quoted-printable" |
Mostly 7-bit, with 8-bit characters encoded as "=HH" |
cdoUuencode |
"uuencode" |
UUENCODE encoding. |
In compliance with RFC 2045, the ContentTransferEncoding property is enforced to be "7bit", "8bit", or "binary" when ContentMediaType indicates a composite content type such as "message" or "multipart". An attempt to encode a composite type with any other mechanism results in an error.
CDO can decode a body part from "mac-binhex40" but cannot encode using this mechanism.
The contents of ContentTransferEncoding are not case-sensitive. The default value is "7bit".
Example
Dim iBp as CDO.BodyPart
iBp.ContentTransferEncoding = "base64"