How Do I...Write Binary Data?

This sample illustrates how to write binary data in an XML stream. The WriteBase64 method encodes the specified binary bytes as Base64 and writes out the resulting text.

After the binary data is written out, it is read into an XmlReader to ensure that the data is valid.

The following code writes the Base64 encoded data inside the element.

using (StringWriter sw = new StringWriter()) { using (XmlWriter writer = XmlWriter.Create(sw)) { writer.WriteStartElement("Test"); writer.WriteAttributeString("Length", buffer.Length.ToString()); writer.WriteCData(Convert.ToBase64String(buffer, 0, buffer.Length)); writer.WriteEndElement(); } ... } Using sw As StringWriter = New StringWriter() Using writer As XmlWriter = XmlWriter.Create(sw) writer.WriteStartElement("Test") writer.WriteAttributeString("Length", buffer.Length.ToString()) writer.WriteCData(Convert.ToBase64String(buffer, 0, buffer.Length)) writer.WriteEndElement() End Using ... End Using