Microsoft.office.interop.excel: Version 15.0.0.0

Excel.Application excelApp = null; Excel.Workbook workbook = null; Excel.Worksheet worksheet = null;

| Alternative | Pros | Cons | |-------------|------|------| | (by Microsoft) | No Excel installation required, fast, reliable | Cannot execute macros or formulas, no real-time rendering | | EPPlus (commercial for non-open use) | High performance, formula support | License cost for commercial use (v5+) | | ClosedXML | Open source, simpler API than Open XML | Limited to basic features, slower for huge files | | NPOI | Free, supports .xls and .xlsx | Less documentation, occasional bugs | | Excel Data Reader | Fast read-only access | No write support | microsoft.office.interop.excel version 15.0.0.0

Console.WriteLine("Error: " + ex.Message); Excel.Application excelApp = null

// Add a new workbook workbook = excelApp.Workbooks.Add(); worksheet = (Excel.Worksheet)workbook.Sheets[1]; Excel.Workbook workbook = null

// Release COM objects properly if (worksheet != null) System.Runtime.InteropServices.Marshal.ReleaseComObject(worksheet); if (workbook != null) System.Runtime.InteropServices.Marshal.ReleaseComObject(workbook); if (excelApp != null) System.Runtime.InteropServices.Marshal.ReleaseComObject(excelApp);