产生由英文和数字组成的指定个数的随机数(转)

        /**//// <summary> 
        /// 产生由英文和数字组成的指定个数的随机数 
        /// </summary> 
        /// <param name="number">产生随机数的个数</param> 
        /// <returns>指定个数的随机英数字符串</returns> 
        public static string GetRandomCode(int number) 
        { 
            string[] arrList = new string[] {"0","1","2","3","4","5","6","7","8","9","A","B","C","D","E","F","G", 
                                                "H","I","J","K","L","M","N","O","P","Q","R","S","T","U","W","X","Y","Z"} ; 
            StringBuilder sb = new StringBuilder("") ; 
            Random random = new Random() ; 
 
            for( int i = 0 ; i < number ; i++ ) 
            { 
                sb.Append(arrList[(int)random.Next(0,arrList.Length)]) ; 
            } 
 
            return sb.ToString() ; 
        }