gcSpreadSheet1.Sheets[0].SetValue(0, 0, GrapeCity.Windows.SpreadSheet.Data.SheetArea.Cells, DateTime.Now);
gcSpreadSheet1.Sheets[0].SetValue(1, 0, GrapeCity.Windows.SpreadSheet.Data.SheetArea.Cells, DateTime.Now.AddDays(1));
gcSpreadSheet1.Sheets[0].SetValue(2, 0, GrapeCity.Windows.SpreadSheet.Data.SheetArea.Cells, DateTime.Now.AddDays(5));
gcSpreadSheet1.Sheets[0].SetValue(3, 0, GrapeCity.Windows.SpreadSheet.Data.SheetArea.Cells, DateTime.Now.AddDays(6));
gcSpreadSheet1.Sheets[0].SetValue(4, 0, GrapeCity.Windows.SpreadSheet.Data.SheetArea.Cells, DateTime.Now.AddDays(7));
gcSpreadSheet1.Sheets[0].SetValue(5, 0, GrapeCity.Windows.SpreadSheet.Data.SheetArea.Cells, DateTime.Now.AddDays(8));
var style2 = new GrapeCity.Windows.SpreadSheet.Data.StyleInfo();
style2.Background = new SolidColorBrush(Colors.Yellow);
GrapeCity.Windows.SpreadSheet.Data.DateOccurringRule test = new GrapeCity.Windows.SpreadSheet.Data.DateOccurringRule();
test.Style = style2;
test.Operator = GrapeCity.Windows.SpreadSheet.Data.DateOccurringType.NextWeek;
test.Ranges = new GrapeCity.Windows.SpreadSheet.Data.CellRange[] { new GrapeCity.Windows.SpreadSheet.Data.CellRange(0, 0, 5, 1) };
gcSpreadSheet1.Sheets[0].ConditionalFormats.AddRule(test);