About EPPlus

Create, read and modify Office Open XML spreadsheets.

EPPlus is a .NET library for managing Office Open XML spreadsheets. The library is designed with the developer in mind allowing any developer with knowledge of Microsoft Excel or any other spreadsheet library to easily get up to speed with the API. EPPlus provides an intuitive programming interface to most of Microsoft Excel’s functionality, such as styling, charts, pictures/shapes, VBA/Form controls, formula calculation, tables, pivot tables, conditional formatting, data validation, etc. EPPlus' feature set and programming interface has always been driven by real world requirements and feedback from its very large user base (EPPlus has been downloaded by .NET Developers more than 40 million times).

EPPlus has been widely used in various .NET environments to create/read/update spreadsheets – in SAAS platforms and internal systems, on-premise and in the cloud. It has also made its way into the Docker/Web assembly world.

EPPlus Features

  • Workbook
    • Document/Printer settings.
  • Worksheets
    • Supports 1,048,576 rows and 16,384 columns.
    • Add, remove, re-order, rename, hide/unhide worksheets in a workbook.
    • Copy worksheets within a workbook or to another workbook with maintained styling and shifting of addresses/references.
    • Print areas.
    • Header/Footer.
    • Page breaks.
    • Split/Freeze/unfreeze panes.
    • Merge cells.
    • Autofit columns.
    • Altering worksheet properties such as gridlines, tab colors, etc.
  • Cell Ranges
    • Create, modify, delete, hide/unhide cells or entire ranges.
    • Access to Row and Column properties via the EntireRow and EntireColumn properties.
    • Sort ranges
      • Multiple sort params.
      • Sort Top to Bottom (by column).
      • Sort Left to Right (by row).
      • Ascending, Descending or User defined (Custom List) sortorder.
      • Updates Sort State in the Office Open XML.
    • Insert/delete ranges - depending addresses will be shifted.
    • Copy ranges to a new address with maintained styling and addresses/reference shifting within a workbook or to another workbook. Exclude different cell properties in the copy operation.
    • Copy styles only.
    • Fill ranges
      • FillNumber.
      • FillDateTime.
      • FillList.
    • Named ranges.
    • The cell store supports IEnumerable, so Cells/Ranges can be queried with Linq.
  • Cell Styling
    • Number.
    • Alignment.
    • Font.
    • Fill.
    • Border.
    • Protection.
    • Wrap text, text rotations and more.
    • Named Styles.
  • Formula calculation
    • Built-in calculation engine with no dependency to Excel or any other library.
    • Calculate entire workbook, a worksheet or a single range.
    • Supports 300+ of the most common functions.
    • Calculates External links.
    • Support for named ranges and the R1C1 format.
    • Add custom functions in runtime.
  • Import/export data to and from worksheets
    • Import data into a formatted table from enumerables of objects, arrays, DataSets, DataReaders, text-files, etc., with just one line of code.
    • Export data to csv files, strings, json, html/css, data tables or streams with many configuration parameters.
  • Supports load and save from/to both files and streams
    • Can create workbooks in a web application and write to the response stream without file access.
    • Get workbook as byte-array.
    • Supports async/await.
  • Templates.
  • Auto filters/Table Filters
    • Create, read, modify, apply and delete filters of the types below:
      • Value filters.
      • Date/Time filters.
      • Custom filters.
      • Top 10 filters.
      • Dynamic filters.
  • Data validation
    • Create, read, modify, delete Data validations.
    • Types of validations supported: Integer (whole in Excel), Decimal, List, Date, Time, Any and Custom.
    • Strongly typed interface for each validation type.
  • Conditional Formatting
    • Create, read, modify Conditional formatting.
    • 40+ types of conditional formatting supported.
    • Strongly typed interface for each conditional formatting type.
  • Tables
    • 60+ predefined styles.
    • Create and modify custom table styles from scratch or using a built-in style as template.
    • Sort table with updated sort state.
    • Support for adding and deleting rows/columns (with shifting).
    • Total row with predefined functions (supported by the built-in Formula calculation).
    • Adding, modifying and applying filters.
    • Adding, modifying or removing table slicers.
    • Export table to a System.Data.DataTable.
    • Export table to JSON.
    • Export table to html/css.
  • Pivot Tables
    • 80+ predefined styles
    • Create and modify custom pivot table styles from scratch or using a built-in style as template.
    • Style your pivot table using pivot areas.
    • Add, modify or remove row, column, page and data fields.
    • Support for 12 different data field functions.
    • Support for numeric and date grouping.
    • Adding calculated fields.
    • Support for adding, modifying filters.
    • Adding, modifying or removing pivot table slicers.
  • Slicers
    • Adding, modifying or removing table- and pivot table- slicers.
    • 10+ predefined styles.
    • Create and modify custom slicer styles from scratch or using a built-in style as template.
  • Hyperlinks
  • Comments
    • Create, read, modify and delete comments (in later Excel versions renamed to Notes).
    • Rich-text supported.
    • Threaded comments with support for mentions, resolve/re-open threads.
  • Shapes
    • 180+ different types of shapes supported.
    • Position, size, border, text, styling, color/gradient/effect/shadow, etc.
  • Pictures
    • Supports adding images from file, stream or a System.Drawing.Image object.
    • Formats: jpg, gif, png, tiff, bmp, emf, wmf, ico, svg, webp
  • Form Controls
    • Supports adding, modifying and removing nine different types of form controls.
    • Support to connect controls to VBA macros, link to cells and more.
  • Charts
    • Support for all Excel chart types.
    • Full support for modern chart styling.
    • Load charts using crtx-files.
    • Strongly typed classes for the different chart types.
  • Sparklines
    • Create, read, modify and delete Sparklines.
    • Line.
    • Column.
    • Win/loss.
  • Themes
    • Load themes from thmx-files.
    • Modify current theme.
  • External Links
    • Updating the external workbook cache (xlsx, xlsm and xlst).
    • Adding references to external workbooks.
    • Breaking links to external workbooks.
    • Retaining OLE and DDE links (available read only).
    • Formula calculation via the external workbook cache or via loading and calculating the external package directly.
  • Protection
    • Protect workbooks with password.
    • Open protected workbooks with password.
    • Protect workbook, worksheets or ranges.
    • Set workbooks to read-only with a password.
  • Encryption
    • Encrypt/decrypt workbooks.
    • Supports both Standard (Older office versions) and Agile encryption (Office 2010 and later).
  • VBA
    • Create, read, delete, modify VBA code/modules.
    • Sign VBA code with certificates.
    • Password protect VBA projects.
  • Supported formats
    • Reads and writes xlsx, xlsm. Please note that EPPlus does not support the xlsx Strict format.
    • Reads xltx, crtx, thmx.
    • Reads and writes txt, csv via the LoadFromText and SaveToText methods.