double dvalue = 12345.6789;
gcSpreadSheet1.Sheets[0].Cells[0, 0].Formatter = new GrapeCity.Windows.SpreadSheet.Data.GeneralFormatter(GrapeCity.Windows.SpreadSheet.Data.FormatMode.StandardNumericMode, "c");
gcSpreadSheet1.Sheets[0].Cells[0, 0].Value = dvalue;
gcSpreadSheet1.Sheets[0].Cells[0, 1].Formatter = new GrapeCity.Windows.SpreadSheet.Data.GeneralFormatter(GrapeCity.Windows.SpreadSheet.Data.FormatMode.StandardDateTimeMode, "M");
gcSpreadSheet1.Sheets[0].SetValue(0, 1, new DateTime(2011, 2, 9));
gcSpreadSheet1.Sheets[0].Cells[0, 2].Formatter = new GrapeCity.Windows.SpreadSheet.Data.GeneralFormatter("m");
gcSpreadSheet1.Sheets[0].SetValue(0, 2, new DateTime(2012, 10, 15));
gcSpreadSheet1.Sheets[0].Cells[0, 3].Formatter = new GrapeCity.Windows.SpreadSheet.Data.GeneralFormatter();
gcSpreadSheet1.Sheets[0].SetValue(0, 3, new DateTime(2012, 10, 15));
gcSpreadSheet1.Sheets[0].Cells[0, 4].Formatter = new GrapeCity.Windows.SpreadSheet.Data.GeneralFormatter(GrapeCity.Windows.SpreadSheet.Data.FormatMode.CustomMode, "#.#%");
gcSpreadSheet1.Sheets[0].SetValue(0, 4, 1);
gcSpreadSheet1.Sheets[0].Cells[1, 0].Formatter = new GrapeCity.Windows.SpreadSheet.Data.GeneralFormatter(GrapeCity.Windows.SpreadSheet.Data.FormatMode.CustomMode, "[>2]0.0;[<-3]0.0;zero;");
gcSpreadSheet1.Sheets[0].SetValue(1, 0, 3);
gcSpreadSheet1.Sheets[0].Cells[2, 0].Formatter = new GrapeCity.Windows.SpreadSheet.Data.GeneralFormatter(GrapeCity.Windows.SpreadSheet.Data.FormatMode.CustomMode, "[Red](#,##0.00)");
gcSpreadSheet1.Sheets[0].SetValue(2, 0, 3);
gcSpreadSheet1.Sheets[0].Cells[3, 0].Formatter = new GrapeCity.Windows.SpreadSheet.Data.GeneralFormatter(GrapeCity.Windows.SpreadSheet.Data.FormatMode.CustomMode, @"(#.##)\[;-#.##\]\[;0.0\]\[;zero\]");
gcSpreadSheet1.Sheets[0].SetValue(3, 0, 3);
gcSpreadSheet1.Invalidate();