private void CreateWorkbookStyles()
{
CellStyle normalStyle = this.workbook.Styles["Normal"];
normalStyle.Fill = PatternFill.CreateSolidFill(new ThemableColor(ThemeColorType.Background1));
normalStyle.FontFamily = new ThemableFontFamily(ThemeFontType.Minor);
normalStyle.FontSize = UnitHelper.PointToDip(10);
normalStyle.VerticalAlignment = RadVerticalAlignment.Center;
CellStyle companyNameStyle = this.workbook.Styles.Add("CompanyNameStyle");
companyNameStyle.FontFamily = new ThemableFontFamily(ThemeFontType.Major);
companyNameStyle.FontSize = UnitHelper.PointToDip(48);
companyNameStyle.HorizontalAlignment = RadHorizontalAlignment.Left;
CellStyle expensePeriodStyle = this.workbook.Styles.Add("ExpensePeriodStyle");
expensePeriodStyle.FontFamily = new ThemableFontFamily("Segoe UI Light");
expensePeriodStyle.FontSize = UnitHelper.PointToDip(20);
expensePeriodStyle.HorizontalAlignment = RadHorizontalAlignment.Right;
CellStyle columnHeadersStyle = this.workbook.Styles.Add("ColumnHeadersStyle");
columnHeadersStyle.FontFamily = new ThemableFontFamily(ThemeFontType.Major);
columnHeadersStyle.BottomBorder = new CellBorder(CellBorderStyle.Thick, new ThemableColor(ThemeColorType.Accent2));
columnHeadersStyle.FontSize = UnitHelper.PointToDip(14);
CellStyle departmentTotalStyle = this.workbook.Styles.Add("DepartmentTotalStyle");
departmentTotalStyle.CopyPropertiesFrom(normalStyle);
departmentTotalStyle.FontSize = UnitHelper.PointToDip(14);
departmentTotalStyle.FontFamily = new ThemableFontFamily("Segoe UI Light");
CellStyle totalStyle = this.workbook.Styles.Add("TotalStyle");
totalStyle.Fill = PatternFill.CreateSolidFill(new ThemableColor(ThemeColorType.Accent2));
totalStyle.FontSize = UnitHelper.PointToDip(14);
totalStyle.ForeColor = new ThemableColor(ThemeColorType.Background1);
}