Used in the RowCountTask. None forces the RowCountTask to do a normal COUNT() and works on all databases. QuickQueryMode only works on SqlServer and uses the partition table which can be much faster on tables with a big amount of data. NoLock does a normal COUNT() using the nolock - option which avoid tables locks when reading from the table (but while counting the tables new data could be inserted, which could lead to wrong results).
public enum RowCountOptions