using System;
public int UltimoDiaDoMes(DateTime data)
{
int dia = data.Day;
DateTime ProximoMes = data.AddMonths(1);
DateTime UltimoDia = ProximoMes.AddDays(-dia);
return UltimoDia.Day;
}
DateTime z = new DateTime(2020, 08, 12);
int x = UltimoDiaDoMes(z);
x
