# Key Features

Develop powerful and lightweight web applications using Excel control. Learn more about the key features of  Excel in MVC documentation.

## Content



Following are some of the main features of Excel, you might find useful:

*   **Save or Load a Workbook with One Command**:<br />Use a single command to load or save a workbook and manipulate sheets.<br /><br />
*   **No Need for Microsoft Excel**:<br />Read and write XLS (Excel 97 and later) and XLSX (OpenXml format) files without a dependency on Microsoft Excel.<br /><br />
*   **Total Microsoft Excel Compatibility**:<br />Just set one property, C1XLBook.CompatibilityMode, to specify which version of Microsoft Excel you want your workbooks to be compatible with. There are three options: Excel2003 (allows up to 64k rows and 256 columns), Excel2007 (up to 1 million rows and 18k columns), and NoLimits.<br /><br />
*   **Format Data**:<br />Format cells to ensure that end-users enter correct data. The format associated with each cell is as easy to access as the data stored in the cell.<br /><br />
*   **Cell Formulas**:<br />The XLCell.Formula property allows you to specify a formula for the cell.<br /><br />
*   **Grouping and Subtotals**:<br />Calculate subtotals for rows and columns. Declare outline level grouping in code to best display totals and subtotals.