Format grid for .net

Do you guys have a new version of the libraries for .net to export to excel that manage the rows format and colors?

I have a treegrid which has different format style for each level and when I export it to excel it results in a table with default format and colors not the ones I defined

Hi,
check the attached version of the library, background styles must work here
grid-excel-net-lib24012012.zip (1.37 MB)

Thanks a lot