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Load/Get Data To/From an Excel Worksheet Using Winnovative Excel Library for .NET
This sample shows how to import data from.NET DataTable or DataView object to an Excel worksheet and how to get the data from an Excel worksheet into a .NET DataTable or DataView object.
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)
    // load an existing Excel file to a temporary workbook

    // create the Excel stream
    string dataFilePath = System.IO.Path.Combine(Server.MapPath("~"), @"Data\awemployees.xls");
    System.IO.FileStream sourceXlsDataStream = new System.IO.FileStream(dataFilePath, System.IO.FileMode.Open);

    ExcelWorkbook tempWorkbook = new ExcelWorkbook(sourceXlsDataStream);
    ExcelWorksheet tempWorksheet = tempWorkbook.Worksheets[0];

    // get the data from the used range of the temporary workbook to a
        .NET DataTable object
    DataTable exportedDataTable = tempWorksheet.GetDataTable(tempWorksheet.UsedRange, true);

    //close the temporary workbook
    //close the data stream

    // Create the workbook in which the data from the DataTable will be
    ExcelWorkbookFormat workbookFormat = radioXlsFormat.Checked ? ExcelWorkbookFormat.Xls_2003 : 

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

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

    // set the default worksheet name
    worksheet.Name = "Data Loaded from a DataTable";

    // load data from DataTable into the worksheet
    worksheet.LoadDataTable(exportedDataTable, 5, 1, true);

    // customize the workbook

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

    // set workbook description properties
    workbook.DocumentProperties.Subject = "Load or Get Data from a .NET
    workbook.DocumentProperties.Comments = 
            "Load/Get data to/from an Excel worksheet using Winnovative Excel
                library for .NET";


    #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.Left;
    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;
    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);
        // 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;


    #region Add a style used for the data table header

    ExcelCellStyle dataHeaderStyle = workbook.Styles.AddStyle("DataHeaderStyle");
    dataHeaderStyle.Font.Size = 10;
    dataHeaderStyle.Font.Bold = true;
    dataHeaderStyle.Alignment.VerticalAlignment = ExcelCellVerticalAlignmentType.Center;
    dataHeaderStyle.Alignment.HorizontalAlignment = ExcelCellHorizontalAlignmentType.Left;
    dataHeaderStyle.Fill.FillType = ExcelCellFillType.SolidFill;
    dataHeaderStyle.Fill.SolidFillOptions.BackColor = Color.LightBlue;
    dataHeaderStyle.Borders[ExcelCellBorderIndex.Bottom].LineStyle = ExcelCellLineStyle.Thin;
    dataHeaderStyle.Borders[ExcelCellBorderIndex.Top].LineStyle = ExcelCellLineStyle.Thin;
    dataHeaderStyle.Borders[ExcelCellBorderIndex.Left].LineStyle = ExcelCellLineStyle.Thin;
    dataHeaderStyle.Borders[ExcelCellBorderIndex.Right].LineStyle = ExcelCellLineStyle.Thin;




    // 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";



    // merge the cells in the range to create the title area 
    // 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 = "Load/Get data to/from
        an Excel Worksheet";

    // 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;


    worksheet["A5:N5"].Style = dataHeaderStyle;
    worksheet["A5:N5"].RowHeightInPoints = 20;

    // lock the data table header

    // autofit column width

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

    string outFileName = workbookFormat == ExcelWorkbookFormat.Xls_2003 ? "LoadGetDataTable.xls" : 

    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

    // Set output stream content type for Excel 97-2003 (.xls) or Excel
        2007 (.xlsx)
    if (workbookFormat == ExcelWorkbookFormat.Xls_2003)
        httpResponse.ContentType = "Application/x-msexcel";
        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
    catch (Exception ex)
        // report any error that might occur during save
        Session["ErrorMessage"] = ex.Message;
        // close the workbook and release the allocated resources

        #region Dispose the Image object

        if (logoImg != null)


    // End the response and finish the execution of this page