Request for adding API support for Conditional Formatting.
GemBox.Spreadsheet supports Conditional Formatting only through the preservation in XLSX files.
This means that any previous formatting we made on our XLSX file will be preserved when we load this file with GemBox.Spreadsheet and save it back to an XLSX format, but they are not directly supported by GemBox.Spreadsheet API.
More information about GemBox.Spreadsheet's preservation can be found on the following link:
This feature request has been implemented and is available in the latest versions of GemBox.Spreadsheet.