ExcelExport exp = new ExcelExport();
exp.Export(PlanningUnitsGrid.Model, (IEnumerable)PlanningUnitsGrid.DataSource, "Export.xlsx", ExcelVersion.Excel2010, true, true, "flat-lime");
new ExcelExport().Export(PlanningUnitsGrid.Model, PlanningUnitsGrid.DataSource, "Export.xlsx", ExcelVersion.Excel2010, false, false, ExportTheme.BootstrapTheme);