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static string[] Fonts(int strLength)
//返回：StrLength 字数的一个一维随机中文简体字字符串数组 String()

static object[] CreateRegionCode(int strLength)
//此函数在汉字编码范围内随机创建含两个元素的十六进制字节数组，每个字节数组代表一个汉字，并将四个字节数组存储在object数组中。

 public static object[] CreateRegionCode(int strlength)
        {
            string[] strArray = new string[] { "0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "a", "b", "c", "d", "e", "f" };
            Random random = new Random();
            object[] objArray = new object[strlength];
            for (int i = 0; i < strlength; i++)
            {
                int num3;
                int num5;
                int index = random.Next(11, 14);
                string str = strArray[index].Trim();
                random = new Random((index * ((int)DateTime.Now.Ticks)) + i);
                if (index == 13)
                {
                    num3 = random.Next(0, 7);
                }
                else
                {
                    num3 = random.Next(0, 0x10);
                }
                string str2 = strArray[num3].Trim();
                random = new Random((num3 * ((int)DateTime.Now.Ticks)) + i);
                int num4 = random.Next(10, 0x10);
                string str3 = strArray[num4].Trim();
                random = new Random((num4 * ((int)DateTime.Now.Ticks)) + i);
                switch (num4)
                {
                    case 10:
                        num5 = random.Next(1, 0x10);
                        break;

                    case 15:
                        num5 = random.Next(0, 15);
                        break;

                    default:
                        num5 = random.Next(0, 0x10);
                        break;
                }
                string str4 = strArray[num5].Trim();
                byte num6 = Convert.ToByte(str + str2, 0x10);
                byte num7 = Convert.ToByte(str3 + str4, 0x10);
                byte[] buffer = new byte[] { num6, num7 };
                objArray.SetValue(buffer, i);
            }
            return objArray;
        }

  public static string[] Fonts(int StrLength)
        {
            Encoding encoding = Encoding.GetEncoding("gb2312");
            object[] objArray = CreateRegionCode(StrLength);
            string[] strArray = new string[StrLength];
            for (int i = 0; i < StrLength; i++)
            {
                strArray[i] = encoding.GetString((byte[])Convert.ChangeType(objArray[i], typeof(byte[])));
            }
            return strArray;
        }