LINQ GroupByDate Reporting Extension
IQueryable<T> extension saves a bit of time when writing a report that groups results by date. You can specify which timeframes to group by (day, week, month, year), or use the default automatic thresholds.
This method also accepts and corrects null dates based on the available results. It does this by performing a simple query to grab the starting date, if it's missing, before running the main report query.
public class OrderCountRow: ReportingExtensions.ReportRow