DVLocal is a Dataview, so the easier way to find out is to use Google: Google "DataView.Count"
] - the first hit is a link to MSDN: MSDN: "DataView.Count Property"
] which tells you all about it.
What is says is that it returns "the number of records in the DataView after RowFilter and RowStateFilter have been applied."
So the line:
if (DVLocal.Count > 0)
will be true if there are any rows in the view, so at least one line to process.