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Setting Cell Styles with Winnovative Excel Library for .NET
This sample shows how to set various styles for the worksheet cells. A cell style consists in fill settings like solid fill, pattern fill or gradient fill, alignment, number format or border lines style.
Getting Started
Cells and Ranges
Cell Styles
Excel Data Types
Excel Charts
Adding Images
Adding Formulas
Data Validation
Load/Get DataTable
Import from CSV
Edit Workbooks
To create the Excel workbook first select the format of the generated workbook and press the Create Workbook button. The Excel workbook will be created on the server and sent as an attachment to the browser. You will be prompted to open the generated workbook in an exernal viewer. The free Excel Viewer from Microsoft supports both the Excel 97-2003 (.xls) format and the new Excel 2007 (.xlsx) format.
Workbook Format:
Create Workbook Button Create Excel Workbook 




protected void lnkBtnCreateWorkbook_Click(object sender, EventArgs e)
{
    // get the Excel workbook format
    ExcelWorkbookFormat workbookFormat = radioXlsFormat.Checked ? ExcelWorkbookFormat.Xls_2003 
            : ExcelWorkbookFormat.Xlsx_2007;

    // create the workbook in the desired format with a single worksheet
    ExcelWorkbook workbook = new ExcelWorkbook(workbookFormat);

    // set the license key before saving the workbook
    workbook.LicenseKey = "RW51ZXZ0ZXVldGt1ZXZ0a3R3a3x8fHw=";

    // set workbook description properties
    workbook.DocumentProperties.Subject = "Cell style demo";
    workbook.DocumentProperties.Comments = "Add cell styles to an Excel
        worksheet using Winnovative Excel library for .NET";

    #region CREATE CUSTOM WORKBOOK STYLES

    #region Add a style used for the cells in the worksheet title area

    ExcelCellStyle titleStyle = workbook.Styles.AddStyle("WorksheetTitleStyle");
    // center the text in the title area
    titleStyle.Alignment.HorizontalAlignment = ExcelCellHorizontalAlignmentType.Center;
    titleStyle.Alignment.VerticalAlignment = ExcelCellVerticalAlignmentType.Center;
    // set the title area borders
    titleStyle.Borders[ExcelCellBorderIndex.Bottom].Color = Color.Green;
    titleStyle.Borders[ExcelCellBorderIndex.Bottom].LineStyle = ExcelCellLineStyle.Medium;
    titleStyle.Borders[ExcelCellBorderIndex.Top].Color = Color.Green;
    titleStyle.Borders[ExcelCellBorderIndex.Top].LineStyle = ExcelCellLineStyle.Medium;
    titleStyle.Borders[ExcelCellBorderIndex.Left].Color = Color.Green;
    titleStyle.Borders[ExcelCellBorderIndex.Left].LineStyle = ExcelCellLineStyle.Medium;
    titleStyle.Borders[ExcelCellBorderIndex.Right].Color = Color.Green;
    titleStyle.Borders[ExcelCellBorderIndex.Right].LineStyle = ExcelCellLineStyle.Medium;
    titleStyle.Borders[ExcelCellBorderIndex.Right].Color = Color.Green;
    titleStyle.Borders[ExcelCellBorderIndex.Right].LineStyle = ExcelCellLineStyle.Medium;
    if (workbookFormat == ExcelWorkbookFormat.Xls_2003)
    {
        // set the solid fill for the title area range with a custom color
        titleStyle.Fill.FillType = ExcelCellFillType.SolidFill;
        titleStyle.Fill.SolidFillOptions.BackColor = Color.FromArgb(255, 255, 204);
    }
    else
    {
        // set the gradient fill for the title area range with a custom color
        titleStyle.Fill.FillType = ExcelCellFillType.GradientFill;
        titleStyle.Fill.GradientFillOptions.Color1 = Color.FromArgb(255, 255, 204);
        titleStyle.Fill.GradientFillOptions.Color2 = Color.White;
    }
    // set the title area font 
    titleStyle.Font.Size = 14;
    titleStyle.Font.Bold = true;
    titleStyle.Font.UnderlineType = ExcelCellUnderlineType.Single;



    #endregion

    #region Add a style used for text messages

    ExcelCellStyle textMessageStyle = workbook.Styles.AddStyle("TextMessageStyle");
    textMessageStyle.Font.Size = 12;
    textMessageStyle.Font.Bold = true;
    textMessageStyle.Alignment.VerticalAlignment = ExcelCellVerticalAlignmentType.Center;
    textMessageStyle.Alignment.HorizontalAlignment = ExcelCellHorizontalAlignmentType.Left;
    textMessageStyle.Fill.FillType = ExcelCellFillType.PatternFill;
    textMessageStyle.Fill.PatternFillOptions.PatternType = ExcelCellFillPatternType.Gray_12_5_Percent;
    textMessageStyle.Fill.PatternFillOptions.BackColor = Color.White;
    textMessageStyle.Fill.PatternFillOptions.PatternColor = Color.Green;
    textMessageStyle.Borders[ExcelCellBorderIndex.Bottom].LineStyle = ExcelCellLineStyle.Thin;
    textMessageStyle.Borders[ExcelCellBorderIndex.Top].LineStyle = ExcelCellLineStyle.Thin;
    textMessageStyle.Borders[ExcelCellBorderIndex.Left].LineStyle = ExcelCellLineStyle.Thin;
    textMessageStyle.Borders[ExcelCellBorderIndex.Right].LineStyle = ExcelCellLineStyle.Thin;

    #endregion

    #region Add a custom cell style

    ExcelCellStyle customCellStyle = workbook.Styles.AddStyle("CustomCellStyle");
    // center the text in the title area
    customCellStyle.Alignment.HorizontalAlignment = ExcelCellHorizontalAlignmentType.Center;
    customCellStyle.Alignment.VerticalAlignment = ExcelCellVerticalAlignmentType.Center;
    // set the title area borders
    customCellStyle.Borders[ExcelCellBorderIndex.Bottom].Color = Color.Blue;
    customCellStyle.Borders[ExcelCellBorderIndex.Bottom].LineStyle = ExcelCellLineStyle.Medium;
    customCellStyle.Borders[ExcelCellBorderIndex.Top].Color = Color.Green;
    customCellStyle.Borders[ExcelCellBorderIndex.Top].LineStyle = ExcelCellLineStyle.Medium;
    customCellStyle.Borders[ExcelCellBorderIndex.Left].Color = Color.Red;
    customCellStyle.Borders[ExcelCellBorderIndex.Left].LineStyle = ExcelCellLineStyle.Medium;
    customCellStyle.Borders[ExcelCellBorderIndex.Right].Color = Color.Yellow;
    customCellStyle.Borders[ExcelCellBorderIndex.Right].LineStyle = ExcelCellLineStyle.Medium;
    customCellStyle.Borders[ExcelCellBorderIndex.DiagonalDown].Color = Color.Orange;
    customCellStyle.Borders[ExcelCellBorderIndex.DiagonalDown].LineStyle = ExcelCellLineStyle.Medium;
    if (workbookFormat == ExcelWorkbookFormat.Xls_2003)
    {
        // set the solid fill for the title area range with a custom color
        customCellStyle.Fill.FillType = ExcelCellFillType.SolidFill;
        customCellStyle.Fill.SolidFillOptions.BackColor = Color.FromArgb(255, 255, 204);
    }
    else
    {
        // set the gradient fill for the title area range with a custom color
        customCellStyle.Fill.FillType = ExcelCellFillType.GradientFill;
        customCellStyle.Fill.GradientFillOptions.Color1 = Color.FromArgb(255, 255, 204);
        customCellStyle.Fill.GradientFillOptions.Color2 = Color.Orange;
    }
    // set the title area font 
    customCellStyle.Font.Size = 14;
    customCellStyle.Font.Bold = true;
    customCellStyle.Font.UnderlineType = ExcelCellUnderlineType.None;

    #endregion

    #endregion

    // get the first worksheet in the workbook
    ExcelWorksheet worksheet = workbook.Worksheets[0];

    // set the default worksheet name
    worksheet.Name = "Cell Styles Demo";

    #region WORKSHEET PAGE SETUP

    // set worksheet paper size and orientation, margins, header and footer
    worksheet.PageSetup.PaperSize = ExcelPagePaperSize.PaperA4;
    worksheet.PageSetup.Orientation = ExcelPageOrientation.Landscape;
    worksheet.PageSetup.LeftMargin = 1;
    worksheet.PageSetup.RightMargin = 1;
    worksheet.PageSetup.TopMargin = 1;
    worksheet.PageSetup.BottomMargin = 1;

    // add header and footer

    //display a logo image in the left part of the header
    string imagesPath = System.IO.Path.Combine(Server.MapPath("~"), @"Images");
    System.Drawing.Image logoImg = System.Drawing.Image.FromFile(System.IO.Path.Combine(imagesPath, "logo.jpg"));
    worksheet.PageSetup.LeftHeaderFormat = "&G";
    worksheet.PageSetup.LeftHeaderPicture = logoImg;
    // display worksheet name in the right part of the header
    worksheet.PageSetup.RightHeaderFormat = "&A";

    // add worksheet header and footer
    // display the page number in the center part of the footer
    worksheet.PageSetup.CenterFooterFormat = "&P";
    // display the workbook file name in the left part of the footer
    worksheet.PageSetup.LeftFooterFormat = "&F";
    // display the current date in the right part of the footer
    worksheet.PageSetup.RightFooterFormat = "&D";

    #endregion

    #region WRITE THE WORKSHEET TOP TITLE

    // merge the cells in the range to create the title area 
    worksheet["A2:G3"].Merge();
    // gets the merged range containing the top left cell of the range
    ExcelRange titleRange = worksheet["A2"].MergeArea;
    // set the text of title area
    worksheet["A2"].Text = "Cell Styles Demo";

    // set a row height of 18 points for each row in the range
    titleRange.RowHeightInPoints = 18;
    // set the worksheet top title style
    titleRange.Style = titleStyle;

    #endregion


    #region SET CELLS WITH VARIOUS VALUES AND FORMATTING

    worksheet["A5:C5"].Merge();
    worksheet["A5:C5"].Style = textMessageStyle;
    worksheet["A5:C5"].RowHeightInPoints = 25;
    worksheet["A5"].Value = "Custom Global Style
        Demo";

    worksheet["A7:G7"].Style = customCellStyle;

    worksheet["A9:C9"].Merge();
    worksheet["A9:C9"].Style = textMessageStyle;
    worksheet["A9:C9"].RowHeightInPoints = 25;
    worksheet["A9"].Value = "Solid Fill";

    worksheet["A11:G11"].Style.Fill.FillType = ExcelCellFillType.SolidFill;
    worksheet["A11:G11"].Style.Fill.SolidFillOptions.BackColor = Color.Orange;

    worksheet["A13:C13"].Merge();
    worksheet["A13:C13"].Style = textMessageStyle;
    worksheet["A13:C13"].RowHeightInPoints = 25;
    worksheet["A13"].Value = "Pattern Fill Demo";

    worksheet["A15:G15"].Style.Fill.FillType = ExcelCellFillType.PatternFill;
    worksheet["A15:G15"].Style.Fill.PatternFillOptions.PatternType = ExcelCellFillPatternType.Gray_12_5_Percent;
    worksheet["A15:G15"].Style.Fill.PatternFillOptions.BackColor = Color.FromArgb(255, 255, 204);
    worksheet["A15:G15"].Style.Fill.PatternFillOptions.PatternColor = Color.Orange;

    worksheet["A16:G16"].Style.Fill.FillType = ExcelCellFillType.PatternFill;
    worksheet["A16:G16"].Style.Fill.PatternFillOptions.PatternType = ExcelCellFillPatternType.DiagonalCrosshatch;
    worksheet["A16:G16"].Style.Fill.PatternFillOptions.BackColor = Color.FromArgb(255, 255, 204);
    worksheet["A16:G16"].Style.Fill.PatternFillOptions.PatternColor = Color.Orange;

    worksheet["A17:G17"].Style.Fill.FillType = ExcelCellFillType.PatternFill;
    worksheet["A17:G17"].Style.Fill.PatternFillOptions.PatternType = ExcelCellFillPatternType.HorizontalStripe;
    worksheet["A17:G17"].Style.Fill.PatternFillOptions.BackColor = Color.FromArgb(255, 255, 204);
    worksheet["A17:G17"].Style.Fill.PatternFillOptions.PatternColor = Color.Orange;

    worksheet["A19:C19"].Merge();
    worksheet["A19:C19"].Style = textMessageStyle;
    worksheet["A19:C19"].RowHeightInPoints = 25;
    worksheet["A19"].Value = "Text Alignment
        Demo";

    worksheet["A21:G21"].ColumnWidthInChars = 15;

    // set row height
    worksheet["A21:G21"].RowHeightInPoints = 75;
    // set row style
    if (workbookFormat == ExcelWorkbookFormat.Xls_2003)
    {
        // set the solid fill with a custom color
        worksheet["A21:G21"].Style.Fill.FillType = ExcelCellFillType.SolidFill;
        worksheet["A21:G21"].Style.Fill.SolidFillOptions.BackColor = Color.FromArgb(255, 255, 204);
    }
    else
    {
        // set the gradient fill with a custom color
        worksheet["A21:G21"].Style.Fill.FillType = ExcelCellFillType.GradientFill;
        worksheet["A21:G21"].Style.Fill.GradientFillOptions.Direction = ExcelGradientDirection.DiagonlDown;
        worksheet["A21:G21"].Style.Fill.GradientFillOptions.Color1 = Color.FromArgb(255, 255, 204);
        worksheet["A21:G21"].Style.Fill.GradientFillOptions.Color2 = Color.Orange;
    }
    worksheet["A21:G21"].Style.Borders[ExcelCellBorderIndex.Bottom].Color = Color.DarkBlue;
    worksheet["A21:G21"].Style.Borders[ExcelCellBorderIndex.Bottom].LineStyle = ExcelCellLineStyle.Medium;
    worksheet["A21:G21"].Style.Borders[ExcelCellBorderIndex.Top].Color = Color.DarkBlue;
    worksheet["A21:G21"].Style.Borders[ExcelCellBorderIndex.Top].LineStyle = ExcelCellLineStyle.Medium;
    worksheet["A21:G21"].Style.Borders[ExcelCellBorderIndex.Left].Color = Color.DarkBlue;
    worksheet["A21:G21"].Style.Borders[ExcelCellBorderIndex.Left].LineStyle = ExcelCellLineStyle.Medium;
    worksheet["A21:G21"].Style.Borders[ExcelCellBorderIndex.Right].Color = Color.DarkBlue;
    worksheet["A21:G21"].Style.Borders[ExcelCellBorderIndex.Right].LineStyle = ExcelCellLineStyle.Medium;

    worksheet["A21"].Style.Alignment.HorizontalAlignment = ExcelCellHorizontalAlignmentType.Left;
    worksheet["A21"].Style.Alignment.VerticalAlignment = ExcelCellVerticalAlignmentType.Top;
    worksheet["A21"].Style.Font.Bold = true;
    worksheet["A21"].Style.Font.Color = Color.Red;
    worksheet["A21"].Value = "Top Left";

    worksheet["B21"].Style.Alignment.HorizontalAlignment = ExcelCellHorizontalAlignmentType.Right;
    worksheet["B21"].Style.Alignment.VerticalAlignment = ExcelCellVerticalAlignmentType.Bottom;
    worksheet["B21"].Style.Font.Bold = true;
    worksheet["B21"].Style.Font.Color = Color.Green;
    worksheet["B21"].Value = "Bottom Right";

    worksheet["C21"].Style.Alignment.HorizontalAlignment = ExcelCellHorizontalAlignmentType.Center;
    worksheet["C21"].Style.Alignment.VerticalAlignment = ExcelCellVerticalAlignmentType.Center;
    worksheet["C21"].Style.Font.Bold = true;
    worksheet["C21"].Style.Font.Color = Color.Blue;
    worksheet["C21"].Value = "Center Center";

    worksheet["D21"].Style.Alignment.HorizontalAlignment = ExcelCellHorizontalAlignmentType.Center;
    worksheet["D21"].Style.Alignment.VerticalAlignment = ExcelCellVerticalAlignmentType.Center;
    worksheet["D21"].Style.Alignment.Orientation = 90;
    worksheet["D21"].Style.Font.Bold = true;
    worksheet["D21"].Style.Font.Color = Color.Orange;
    worksheet["D21"].Value = "Center Vertical";

    worksheet["E21"].Style.Alignment.HorizontalAlignment = ExcelCellHorizontalAlignmentType.Center;
    worksheet["E21"].Style.Alignment.VerticalAlignment = ExcelCellVerticalAlignmentType.Top;
    worksheet["E21"].Style.Alignment.Orientation = -90;
    worksheet["E21"].Style.Font.Bold = true;
    worksheet["E21"].Style.Font.Color = Color.Red;
    worksheet["E21"].Value = "Top Vertical";

    worksheet["F21"].Style.Alignment.HorizontalAlignment = ExcelCellHorizontalAlignmentType.Right;
    worksheet["F21"].Style.Alignment.VerticalAlignment = ExcelCellVerticalAlignmentType.Top;
    worksheet["F21"].Style.Font.Bold = true;
    worksheet["F21"].Style.Font.Color = Color.Green;
    worksheet["F21"].Value = "Right Top";

    worksheet["G21"].Style.Alignment.HorizontalAlignment = ExcelCellHorizontalAlignmentType.Right;
    worksheet["G21"].Style.Alignment.VerticalAlignment = ExcelCellVerticalAlignmentType.Bottom;
    worksheet["G21"].Style.Font.Bold = true;
    worksheet["G21"].Style.Font.Color = Color.Blue;
    worksheet["G21"].Value = "Right Bottom";

    worksheet["A23:C23"].Merge();
    worksheet["A23:C23"].Style = textMessageStyle;
    worksheet["A23:C23"].RowHeightInPoints = 25;
    worksheet["A23"].Value = "Fonts Demo";

    // set row style
    if (workbookFormat == ExcelWorkbookFormat.Xls_2003)
    {
        // set the solid fill with a custom color
        worksheet["A25:G25"].Style.Fill.FillType = ExcelCellFillType.SolidFill;
        worksheet["A25:G25"].Style.Fill.SolidFillOptions.BackColor = Color.FromArgb(255, 255, 204);
    }
    else
    {
        // set the gradient fill with a custom color
        worksheet["A25:G25"].Style.Fill.FillType = ExcelCellFillType.GradientFill;
        worksheet["A25:G25"].Style.Fill.GradientFillOptions.Direction = ExcelGradientDirection.DiagonlDown;
        worksheet["A25:G25"].Style.Fill.GradientFillOptions.Color1 = Color.FromArgb(255, 255, 204);
        worksheet["A25:G25"].Style.Fill.GradientFillOptions.Color2 = Color.Orange;
    }
    worksheet["A25:G25"].Style.Borders[ExcelCellBorderIndex.Bottom].Color = Color.DarkBlue;
    worksheet["A25:G25"].Style.Borders[ExcelCellBorderIndex.Bottom].LineStyle = ExcelCellLineStyle.Medium;
    worksheet["A25:G25"].Style.Borders[ExcelCellBorderIndex.Top].Color = Color.DarkBlue;
    worksheet["A25:G25"].Style.Borders[ExcelCellBorderIndex.Top].LineStyle = ExcelCellLineStyle.Medium;
    worksheet["A25:G25"].Style.Borders[ExcelCellBorderIndex.Left].Color = Color.DarkBlue;
    worksheet["A25:G25"].Style.Borders[ExcelCellBorderIndex.Left].LineStyle = ExcelCellLineStyle.Medium;
    worksheet["A25:G25"].Style.Borders[ExcelCellBorderIndex.Right].Color = Color.DarkBlue;
    worksheet["A25:G25"].Style.Borders[ExcelCellBorderIndex.Right].LineStyle = ExcelCellLineStyle.Medium;

    worksheet["A25"].Style.Font.Color = Color.Green;
    worksheet["A25"].Style.Font.Bold = true;
    worksheet["A25"].Style.Font.Size = 14;
    worksheet["A25"].Style.Alignment.HorizontalAlignment = ExcelCellHorizontalAlignmentType.Center;
    worksheet["A25"].Style.Alignment.VerticalAlignment = ExcelCellVerticalAlignmentType.Center;
    worksheet["A25"].Value = "Hello";

    worksheet["B25"].Style.Font.Color = Color.Blue;
    worksheet["B25"].Style.Font.Name = "Verdana";
    worksheet["B25"].Style.Font.Bold = true;
    worksheet["B25"].Style.Font.Size = 16;
    worksheet["B25"].Style.Alignment.HorizontalAlignment = ExcelCellHorizontalAlignmentType.Center;
    worksheet["B25"].Style.Alignment.VerticalAlignment = ExcelCellVerticalAlignmentType.Center;
    worksheet["B25"].Value = "Hello";

    worksheet["C25"].Style.Font.Color = Color.Red;
    worksheet["C25"].Style.Font.Name = "Times
        New Roman";
    worksheet["C25"].Style.Font.Bold = true;
    worksheet["C25"].Style.Font.Italic = true;
    worksheet["C25"].Style.Font.Size = 14;
    worksheet["C25"].Style.Alignment.HorizontalAlignment = ExcelCellHorizontalAlignmentType.Center;
    worksheet["C25"].Style.Alignment.VerticalAlignment = ExcelCellVerticalAlignmentType.Center;
    worksheet["C25"].Value = "Hello";


    worksheet["D25"].Style.Font.Color = Color.Green;
    worksheet["D25"].Style.Font.Bold = true;
    worksheet["D25"].Style.Font.Italic = true;
    worksheet["D25"].Style.Font.Size = 16;
    worksheet["D25"].Style.Alignment.HorizontalAlignment = ExcelCellHorizontalAlignmentType.Center;
    worksheet["D25"].Style.Alignment.VerticalAlignment = ExcelCellVerticalAlignmentType.Center;
    worksheet["D25"].Style.Alignment.Orientation = 90;
    worksheet["D25"].Value = "Hello";

    worksheet["E25"].Style.Font.Color = Color.Blue;
    worksheet["E25"].Style.Font.Bold = true;
    worksheet["E25"].Style.Font.Italic = true;
    worksheet["E25"].Style.Font.Size = 16;
    worksheet["E25"].Style.Alignment.HorizontalAlignment = ExcelCellHorizontalAlignmentType.Center;
    worksheet["E25"].Style.Alignment.VerticalAlignment = ExcelCellVerticalAlignmentType.Center;
    worksheet["E25"].Style.Alignment.Orientation = -90;
    worksheet["E25"].Value = "Hello";

    worksheet["F25"].Style.Font.Color = Color.Red;
    worksheet["F25"].Style.Font.Bold = true;
    worksheet["F25"].Style.Font.Italic = true;
    worksheet["F25"].Style.Font.UnderlineType = ExcelCellUnderlineType.DoubleAccounting;
    worksheet["F25"].Style.Font.Size = 14;
    worksheet["F25"].Style.Alignment.HorizontalAlignment = ExcelCellHorizontalAlignmentType.Center;
    worksheet["F25"].Style.Alignment.VerticalAlignment = ExcelCellVerticalAlignmentType.Center;
    worksheet["F25"].Value = "Hello";

    worksheet["G25"].Style.Font.Color = Color.Orange;
    worksheet["G25"].Style.Font.Bold = true;
    worksheet["G25"].Style.Font.IsStrikethrough = true;
    worksheet["G25"].Style.Font.Size = 14;
    worksheet["G25"].Style.Alignment.HorizontalAlignment = ExcelCellHorizontalAlignmentType.Center;
    worksheet["G25"].Style.Alignment.VerticalAlignment = ExcelCellVerticalAlignmentType.Center;
    worksheet["G25"].Value = "Hello";

    worksheet["A27:C27"].Merge();
    worksheet["A27:C27"].Style = textMessageStyle;
    worksheet["A27:C27"].RowHeightInPoints = 25;
    worksheet["A27"].Value = "Borders Demo";

    // set row height
    worksheet["A29:G29"].RowHeightInPoints = 75;

    worksheet["A29"].Style.Borders[ExcelCellBorderIndex.Bottom].Color = Color.DarkBlue;
    worksheet["A29"].Style.Borders[ExcelCellBorderIndex.Bottom].LineStyle = ExcelCellLineStyle.Medium;
    worksheet["A29"].Style.Borders[ExcelCellBorderIndex.Top].Color = Color.DarkBlue;
    worksheet["A29"].Style.Borders[ExcelCellBorderIndex.Top].LineStyle = ExcelCellLineStyle.Medium;
    worksheet["A29"].Style.Borders[ExcelCellBorderIndex.Left].Color = Color.DarkBlue;
    worksheet["A29"].Style.Borders[ExcelCellBorderIndex.Left].LineStyle = ExcelCellLineStyle.Medium;
    worksheet["A29"].Style.Borders[ExcelCellBorderIndex.Right].Color = Color.DarkBlue;
    worksheet["A29"].Style.Borders[ExcelCellBorderIndex.Right].LineStyle = ExcelCellLineStyle.Medium;

    // all cell borders have the sae style
    worksheet["B29"].Style.Borders.Color = Color.Red;
    worksheet["B29"].Style.Borders.LineStyle = ExcelCellLineStyle.DashDot;

    worksheet["C29"].Style.Borders[ExcelCellBorderIndex.Bottom].Color = Color.Green;
    worksheet["C29"].Style.Borders[ExcelCellBorderIndex.Bottom].LineStyle = ExcelCellLineStyle.Double;
    worksheet["C29"].Style.Borders[ExcelCellBorderIndex.Top].Color = Color.Green;
    worksheet["C29"].Style.Borders[ExcelCellBorderIndex.Top].LineStyle = ExcelCellLineStyle.Double;
    worksheet["C29"].Style.Borders[ExcelCellBorderIndex.Left].Color = Color.Green;
    worksheet["C29"].Style.Borders[ExcelCellBorderIndex.Left].LineStyle = ExcelCellLineStyle.Double;
    worksheet["C29"].Style.Borders[ExcelCellBorderIndex.Right].Color = Color.Green;
    worksheet["C29"].Style.Borders[ExcelCellBorderIndex.Right].LineStyle = ExcelCellLineStyle.Double;

    worksheet["D29"].Style.Borders.Color = Color.Orange;
    worksheet["D29"].Style.Borders.LineStyle = ExcelCellLineStyle.Thick;

    worksheet["E29"].Style.Borders[ExcelCellBorderIndex.Bottom].Color = Color.Blue;
    worksheet["E29"].Style.Borders[ExcelCellBorderIndex.Bottom].LineStyle = ExcelCellLineStyle.Dot;
    worksheet["E29"].Style.Borders[ExcelCellBorderIndex.Top].Color = Color.Blue;
    worksheet["E29"].Style.Borders[ExcelCellBorderIndex.Top].LineStyle = ExcelCellLineStyle.Dot;
    worksheet["E29"].Style.Borders[ExcelCellBorderIndex.Left].Color = Color.Blue;
    worksheet["E29"].Style.Borders[ExcelCellBorderIndex.Left].LineStyle = ExcelCellLineStyle.Dot;
    worksheet["E29"].Style.Borders[ExcelCellBorderIndex.Right].Color = Color.Blue;
    worksheet["E29"].Style.Borders[ExcelCellBorderIndex.Right].LineStyle = ExcelCellLineStyle.Dot;
    worksheet["E29"].Style.Borders[ExcelCellBorderIndex.DiagonalDown].Color = Color.Blue;
    worksheet["E29"].Style.Borders[ExcelCellBorderIndex.DiagonalDown].LineStyle = ExcelCellLineStyle.Dot;

    worksheet["F29"].Style.Borders.Color = Color.Red;
    worksheet["F29"].Style.Borders.LineStyle = ExcelCellLineStyle.MediumDashDot;

    worksheet["G29"].Style.Borders.Color = Color.Green;
    worksheet["G29"].Style.Borders.LineStyle = ExcelCellLineStyle.Thin;


    #endregion

    // SAVE THE WORKBOOK

    // Save the Excel document in the current HTTP response stream

    string outFileName = workbookFormat == ExcelWorkbookFormat.Xls_2003 ? "CellStyles.xls" : "CellStyles.xlsx";

    System.Web.HttpResponse httpResponse = System.Web.HttpContext.Current.Response;

    // Prepare the HTTP response stream for saving the Excel document

    // Clear any data that might have been previously buffered in the
        output stream
    httpResponse.Clear();

    // Set output stream content type for Excel 97-2003 (.xls) or Excel
        2007 (.xlsx)
    if (workbookFormat == ExcelWorkbookFormat.Xls_2003)
        httpResponse.ContentType = "Application/x-msexcel";
    else
        httpResponse.ContentType = "Application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";

    // Add the HTTP header to announce the Excel document either as an
        attachment or inline
    httpResponse.AddHeader("Content-Disposition", String.Format("attachment; filename={0}", outFileName));

    // Save the workbook to the current HTTP response output stream
    // and close the workbook after save to release all the allocated
        resources
    try
    {
        workbook.Save(httpResponse.OutputStream);
    }
    catch (Exception ex)
    {
        // report any error that might occur during save
        Session["ErrorMessage"] = ex.Message;
        Response.Redirect("ErrorPage.aspx");
    }
    finally
    {
        // close the workbook and release the allocated resources
        workbook.Close();

        #region Dispose the Image object

        if (logoImg != null)
            logoImg.Dispose();

        #endregion
    }

    // End the response and finish the execution of this page
    httpResponse.End();

}
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