Version: 2.5
Returns a long value that is the size in bytes of an opened Stream object.
The Size property returns a long value that is the size in bytes of the data stored
in the Stream object.
Note that this property requires that the Stream be open.
If it is not open, an error will be generated.
If the size is not known, the return value is -1.
If the size exceeds the upper limit of a long value, a truncated size is returned.
Set objStream = Server.CreateObject("ADODB.Stream")
objStream.Open rsData, adModeShareExclusive
...
Dim lngStreamSize
lngStreamSize = objStream.Size