enum Color
    {
        Red,Yellow,Blue,Green,Black,White
    }
    class Program
    {
        static void Main(string[] args)
        {
            Color[] color_arr = new Color[3];
            int[] int_arr = new int[] { 1, 2, 3 };
            color_arr = (Color[])int_arr;
            Console.WriteLine("color is {0}", color_arr[0]);
            Console.WriteLine("color is {1}", color_arr[1]);
            Console.WriteLine("color is {2}", color_arr[2]);
            Console.Read();
        }
    }
怎么转换

color_arr = (Color[])int_arr;主要是这句

这个代码的意思我还没看出来呃。。

代码有错
改为：
using System;
enum Color{
    Red,Yellow,Blue,Green,Black,White
}
class Program{
    static void Main(string[] args){
        Color[] color_arr = new Color[3];
        int[] int_arr = new int[] { 1, 2, 3 };
        //color_arr = (Color[])int_arr;
        for(int i = 0; i < int_arr.Length; i++){
            color_arr[i] = (Color)int_arr[i];
        }
        Console.WriteLine("color is {0}", color_arr[0]);
        Console.WriteLine("color is {0}", color_arr[1]);
        Console.WriteLine("color is {0}", color_arr[2]);
        Console.Read();
    }
}

color_arr[i] = (Color)int_arr[i];表示将整型数据转换成枚举类型。