C# 获取指定范围的n个随机数

Question

#region 随机数获取
/**
 * 获取规定范围内的 n 个随机数
 * 
 * min_value    int    随机数下限
 * max_value    int    随机数上限
 * number       int    随机数量
 */
private string getRandom(int min_value, int max_value, int number)
{
    Random random = new Random();
    ArrayList arr = new ArrayList();
    int temp = 0;
    for (int i = 0; i < number; i++)
    {
        temp = random.Next(min_value, max_value); //随机取数
        arr.Add(temp);
    }
    string str = "";
    for (int j = 0; j < arr.Count; j++)
    {
        str += arr[j].ToString() + ",";
        //Console.Write(arr[j].ToString());
    }
    return str.Substring(0, str.LastIndexOf(","));
}
#endregion