Tarihi Excel Serial Number Formatına dönştürmek ?

DATE To OLE

        DateTime MyDate = new DateTime(1904, 12, 12, 1,4,1);

        double MyDouble = MyDate.ToOADate();

 

 

From OLE to DATE

 

        double MyOADate = 831.01289631332;

        DateTime MyDate = DateTime.FromOADate(MyOADate);