Hi again,
Sorry to know that the latest build didn’t help.
Please modify your exiting code as outlined below while using the latest version of Aspose.Cells for .NET 8.0.0.
C#
//Instantiate a new Workbook
Workbook book = new Workbook(FileFormatType.Xlsx);
//Note: This setting will not take effect for the existing worksheets that are created before setting the memory preferences
//Set the memory preferences
book.Settings.MemorySetting = MemorySetting.MemoryPreference;
//Note: The memory settings also would not work for the default sheet i.e., “Sheet1” etc. automatically created by the Workbook
//Get cells of the newly created Worksheet “Sheet2”
Cells cells = book.Worksheets.Add(“Sheet2”).Cells;
//Import DataTable using Cells.ImportDataTable method
In case the problem persists, please more details of your environment such as Operating System version, Operating System Architecture (32bit/64bit), Service Pack, Target Framework version, RAM etc. We need this information to replicate the environment on our end so we could further troubleshoot the issue.