Good to know that you have moved past the previously reported problem. Regarding the evaluation worksheets in the resultant spreadsheet, this is because you are not setting the license for Aspose.Cells API, yet you are using it in your application. Please note, you have to set the license for both components separately, that is; for Aspose.Cells.GridWeb for .NET and Aspose.Cells for .NET.
Your licensing code should look like as follow,
C#
//Instantiate the License class for GridWeb
Aspose.Cells.GridWeb.License licenseGridWeb = new Aspose.Cells.GridWeb.License(); //Pass only the name of the license file embedded in the assembly
licenseGridWeb.SetLicense(“Aspose.Cells.lic”);
//Instantiate the License class for Cells
Aspose.Cells.License licenseCells = new Aspose.Cells.License(); //Pass only the name of the license file embedded in the assembly
licenseCells.SetLicense(“Aspose.Cells.lic”);