Create Excel file with hyperlink to cell, hyperlink to file, hyperlink to sheet or URL using EasyXLS library! XLS, XLSX, XLSM, XLSB file in .NET.
http://www.easyxls.com/manual/tutorials/csharp/excel-hyperlink-cell-file-sheet-url.html

Create Excel file with conditional formatting for sheet cells using EasyXLS library! XLS, XLSX, XLSM, XLSB files in .NET. https://www.easyxls.com/manual/tutorials/csharp/excel-conditional-formatting.html

Excel file with data validation for sheet cells, drop down list and validate whole number, using EasyXLS library! XLS, XLSX, XLSM, XLSB in .NET.
http://www.easyxls.com/manual/tutorials/csharp/excel-validate-data.html

Create Excel file with name area in sheet using EasyXLS library! XLS, XLSX, XLSM, XLSB files in .NET.
http://www.easyxls.com/manual/tutorials/csharp/excel-name-area.html

Create Excel file with formula in sheet cells using EasyXLS library! XLS, XLSX, XLSM, XLSB files in .NET.
http://www.easyxls.com/manual/tutorials/csharp/add-excel-formula.html