exceed the maximum number of rows in sWorksheetGrid (FPSpreadsheet) lazarus / 49-FPSpreadsheet ---------------------------------------------------------------------- Ericktux · 2021-04-23 01:44 Hello friends, I am doing a project to import and read an excel spreadsheet (XLSX). I am currently using the "sWorksheetGrid" component from the "FPSpreadsheet" palette and for the moment it works perfect for me. The problem I have now is that it does not allow me to import a 1,000,000 row XLSX file. the limit is around 50,000. How can I solve it please? ---------------------------------------------------------------------- wp · 2021-04-23 07:24 Are you on a 32-bit platform? There you certainly run out of memory - switch to the 64-bit Lazarus where I just confirmed that 1M rows can be written to xlsx successfully (the limitation of the file format is at 1,048,576 rows (and 16,384 columns)); it takes some time, though... Can't resist to ask this question: With so many rows, are you sure that a spreadsheet is the correct tool? ---------------------------------------------------------------------- Ericktux · 2021-04-26 10:21 Thanks for responding, I will do the tests and let you know friend, greetings