String和enum的互相转换

定义以下枚举

public enum BookType
{
   Ticket,
   Trip,
   Hotel
}

从String到enum
BookType type = (BookType)Enum.Parse(typeof(BookType),"Ticket");

从enum到String
方法一：ToString();
方法二：s = Enum.GetName(typeof(BookType), BookType.Ticket);