public String getDiag(int n)
        {
            bio temp = new bio();
            temp = (bio)medH[n];

            return temp.diag;
        }
        public String getPla(int n)
        {
            bio temp = new bio();
            temp = (bio)medH[n];

            return temp.place;
        }
        public DateTime getDate(int n)
        {
            bio temp = new bio();
            temp = (bio)medH[n];

            return temp.date;
        }
 public void setMH(String d, String p, DateTime dt)
 {
     bio b = new bio();
     b.diag = d;
     b.place = p;
     b.date = dt;
     medH.Add(b);
 }