Save an excel file to a csv file in C# code

Question

I want to open an excel file and save it as a csv file. Google search no lucky. I need C sharp code to do it.

Thanks for your nice help.

Answer 1

If you are willing to use Excel Interop:

        Excel.Application app = new Excel.Application();
        Excel.Workbook wb = app.Workbooks.Open(@"c:\temp\testtable.xlsx");
        wb.SaveAs(@"C:\Temp\output.csv", Excel.XlFileFormat.xlCSVWindows);
        wb.Close(false);
        app.Quit();
        Console.WriteLine("Done!");