This is a small C# library made to simplify reading from and writing to Excel workbooks in the Open XML file format (.xlsx). Here's an example to get you started:

Workbook workbook = new Workbook();
workbook.Open("Book1.xlsx");
Sheet sheet = workbook.Sheet("Sheet1");
Row row = sheet.Row(2);
Cell cell = row.Cell(3);
string text = cell.Value;

See the wiki for more examples.

• No dependencies except .NET Framework 4.5. Easy to include in other solutions.
• Built and extendable with LINQ. Most collections in the library (e.g. Workbook.Sheets or Row.Cells) is of type IEnumerable<T>, which allows you to use LINQ queries to find exactly what you need.
• Respects the visibility of sheets, rows and columns. Set the IncludeHidden option to trueto return hidden objects.
• Well-tested. The library is being developed using principles of Test-driven development (TDD). A large set of unit tests verifies that new bugs are not introduced on code changes.
• Well-documented. A software library is only as useful as its documentation.

The following things have been considered outside the scope of the project:

• All file formats except .xslx.
• Formulas
• Formatting properties

The following things are planned but not yet implemented features:

• All write functionality (writing to cells, adding new sheets, adding and deleting rows and columns and so on).

Also, the library will not create new workbooks per se, but the same can be achieved by including a template workbook in your project and copy it whenever you need to create a workbook.

For more on project status, see the Current status page in the wiki.