The XLS and XLSX file extensions are used for Microsoft Excel worksheets. Excel is a popular spreadsheet program used with data like numbers, formulas, text, and drawing shapes. Excel is part of the Microsoft Office Suite of software. XLS files use a Binary Interchange File Format to store spreadsheet data and are proprietary to Microsoft.
Note:XLS and XLSX file formats are supported in the Document/Medical licensing.
LEADTOOLS supports loading XLS (97-2003) files through the XLS filter.
LEADTOOLS supports loading XLSX (2007) files through the XLSX filter.
The default extension used by this format is: XLS.
The file constants associated with this file format are:
| Constant | Read Support | Write Support | Description |
| Xls | 24 BPP | N/A | XLS, Excel spreadsheet file |
| Xlsx | 24 BPP | N/A | XLSX, Excel 2007 spreadsheet file |
Required DLL: Leadtools.Codecs.Xls.Dll or Leadtools.Codecs.Xlx.Dll. The XLSX file format requires .NET Framework 3.5 and the DocumentFormat.OpenXml.dll(ver. 2.0). For a listing of the exact DLLs needed, based on the toolkit version, refer to Files To Be Included With Your Application .
Platforms: Platforms: .NET 2/3, .NET 4
NOTE: LEADTOOLS also supports writing this file format using the LEADTOOLS Document Writers. For more information on the LEADTOOLS Document Writers SDK, refer to Introduction.