Good morning.
I am working with version 10.1.0 of FreeSpire.XLS and I have noticed that the SaveChartAsImage method only returns images up to the third sheet of the book. If I have charts from the fourth sheet, the method returns 0 elements. Is this an error or the behavior is as expected? I don't see sense in this version to create the sheets you want but this function only returns images of graphs only up to the third.
A greeting.