Learn how to load an Excel workbook into a web page using Aspose.Cells.GridJs (client‑side library) with a .NET 6 MVC backend. Includes complete server‑ and client‑side code, configuration steps, and screenshots....* (NuGet) dotnet add package Aspose.Cells...* Aspose.Cells.GridJs 25.* (NuGet) dotnet add package Aspose.Cells...