Emptiness of XmlReader

[Han]

Hello

How do you know the emptiness of XmlReader? Example,

xmlreader xr=command.executeXmlReader()

Now if there is no data retrieved from SQL Server, the xmlReader may be
empty or something.

if (! xr.eof)
if (xr != null)

None worked. All I found to now is,

xr.moveToContent()
then,
if (! xr.eof)

That seems to work. However I believe there is a better way to find the
emptiness of the XmlReader.