生成随机不重复数列表(C#)

/// <summary>
/// 生成随机不重复数列表
/// </summary>
/// <param name="count">不重复数数量</param>
/// <returns>不重复数列表</returns>
private static List<int> GetRandomList(int count)
{
List<int> list = new List<int>();
int num = 0;
Random rnd = new Random();
for (int i = 0; i < count; i++)
{
do
{
num = rnd.Next(010000, 1000000);
} while (list.Contains(num));//
list.Add(num);
}
return list;
}