Assembly: System.Xml (in system.xml.dll)
public override function ReadContentAsBase64 ( buffer : byte, index : int, count : int ) : int
The buffer into which to copy the resulting text. This value cannot be a null reference (Nothing in Visual Basic).
The offset into the buffer where to start copying the result.
The maximum number of bytes to copy into the buffer. The actual number of bytes copied is returned from this method.
Return ValueThe number of bytes written to the buffer.
The buffer value is a null reference (Nothing in Visual Basic).
ReadContentAsBase64 is not supported in the current node.
The index into the buffer or index + count is larger than the allocated buffer size.
In the Microsoft .NET Framework version 2.0 release, the recommended practice is to create XmlReader instances using the System.Xml.XmlReader.Create method. This allows you to take full advantage of the new features introduced in this release. For more information, see Creating XML Readers.
This method streams the content, decodes the Base64 content, and returns the decoded binary bytes (for example, an inline Base64-encoded GIF image) into the buffer. This method can be called successively to read large streams of embedded text. For more information, see RFC 1521, "MIME (Multipurpose Internet Mail Extensions) Part One: Mechanisms for Specifying and Describing the Format of Internet Message Bodies". You can obtain RFCs from the Request for Comments Web site at http://www.rfc-editor.org.
You should not access any of the reader properties between calls to the ReadContentAsBase64 method until the method returns the value 0.
This method has the following behavior:
ReadContentAsBase64 returns the value 0 when it has reached the end of the byte stream it was operating on. The reader is positioned on the first non-content node.
If you ask for fewer, or the exact number, of bytes than are left in the stream the reader remains in its current position.
ReadContentAsBase64 is not supported on the following XML node types: Element, XmlDeclaration, None, Document, DocumentType, Notation, Entity, DocumentFragment.
Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile for Pocket PC, Windows Mobile for Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.