Thanks for using Aspose APIs.
You can install Aspose.Cells from NuGet like any other package. Please see this video or similar videos for help. Please note, you do not need to use command line, just use NuGet Package Manager GUI.
Just type Aspose.Cells in search box and you will be able to accomplish the task. Here is the Direct URL from where you can download Aspose.Cells automatically via NuGet Package Manager or manually
Once you have successfully installed or added the reference of Aspose.Cells, you can execute the following code. The code loads the Template Excel file and makes some changes inside it and saves it as Output Excel file. Please see the screenshot below to see the effect of code.
Template and Output Excel Files.zip (21.2 KB)
//Load your template Excel file.
Workbook wb = new Workbook("Template.xlsx");
//Access first worksheet.
Worksheet ws = wb.Worksheets;
//Add values in cells A2, A3, A4 using row and column indices.
//Add values in cells B2, B3, B4 using cell names.
//Save to output Excel file.