Take

　　Take操作符用于从输入序列中返回指定数量的元素。用法如下代码：

static void Main()
{
     int[] grades = { 59, 82, 70, 56, 92, 98, 85 };
     //对数组降序排序并取出前三个记录
     IEnumerable&ltint&gt topThreeGrades =
            grades.OrderByDescending(grade => grade).Take(3); 
     Console.WriteLine("The top three grades are:");
     foreach (int grade in topThreeGrades)
     {
         Console.WriteLine(grade);
     }
}

运行结果为：

The top three grades are:
98
92
85