Question

C#如何从一个列表里取一个随机数？

Answer 1

输入：列表 输出：随机元素

public T GetRandomItem<T>(IList<T> list)
{
    if (list == null) throw new ArgumentNullException("list");
    int count = list.Count;
    if (count == 0) return default(T);
    int index = new Random().Next(count);
    return list[index];
}sh

Answer 2

Random对象就是生成随机数的!