SpreadsheetGear 2023
SpreadsheetGear 2023 > What's New > SpreadsheetGear 2017 > Limitations

Our goal since we started development of Open XML support was to read from and write to Excel Open XML (.xlsx and .xlsm) files everything which we support in our API and as many of the elements as possible which SpreadsheetGear for .NET can read and write from / to Excel 97-2003 (.xls) files. 

We intend to support all of these features eventually. We base new features primarily on customer feedback, so let us know what is important to you.

These limitations were introduced in SpreadsheetGear 2008 and have not changed with the release of SpreadsheetGear 2017.

Excel 2016 has full support for these features via the the "ISO/IEC 29500 Strict" file format. Unfortunately this file format has not received wide industry adoption as of the release of SpreadsheetGear 2017 (Excel for iOS does not even support the strict format). So we are reconsidering the possibility of supporting VML in the Open XML transitional file format in the next major release of SpreadsheetGear.

SpreadsheetGear 2017 Limitations: