I\'ve got an Excel spreadsheet, with a Macro, that inserts a conditional formatting, like this:
Selection.FormatConditions.Add Type:=xlExpression, Formula1:=
Please refer to the link for more explanation: https://bettersolutions.com/csharp/excel-interop/locale-culture.htm
CultureInfo baseCulture = System.Threading.Thread.CurrentThread.CurrentCulture;
Thread.CurrentThread.CurrentCulture = new CultureInfo(xlapp.LanguageSettings.LanguageID(Office.MsoAppLanguageID.msoLanguageIDUI));
// do something
System.Threading.Thread.CurrentThread.CurrentCulture = baseCulture;