How to open an Excel file in C#?
You need to have installed Microsoft Visual Studio Tools for Office (VSTO). VSTO can be selected in the Visual Studio installer under Workloads > Web & Cloud > Office/SharePoint Development. After that create a generic .NET project and add a reference to Microsoft.Office.Interop.Excel via ‘Add Reference… > Assemblies’ dialog. Missing.Value is a special reflection struct … Read more