Hi,
We are developing a windows service application for the generation of preview images from different types of documents and we think Spire.Doc and Spire.Xls could do a nice job at helping us speed up the implementation since they seem very easy to integrate and use.
Before buying we performed some tests with the trial versions of each component and we encountered some issues that we would like you to help us solve as soon as possible.
For Spire.XLS we noticed that the conversion to images doesn't work as expected when we have a linear block of cells that have been previously merged. The resulting image is cropped to include only the display area of the first cell in the range.
For exemplification i have attached an archive that contains a workbook we used to perform our testing and the source code of the component that invokes Spire.XLS API's.
We have also noticed that the method sheet.IsEmpty does not help us skip empty sheets. The same document mentioned above has been used for testing.