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  • 生成随机字母字符串(数字字母混和)

    1.生成随机字母字符串(数字字母混和)

            /// 生成随机字母字符串(数字字母混和)
            /// 
            /// 待生成的位数
            /// 生成的字母字符串
            private string GenerateCheckCode(int codeCount)
            {
                int rep = 0;
                string str = string.Empty;
                long num2 = DateTime.Now.Ticks + rep;
                rep++;
                Random random = new Random(((int)(((ulong)num2) & 0xffffffffL)) | ((int)(num2 >> rep)));
                for (int i = 0; i < codeCount; i++)
                {
                    char ch;
                    int num = random.Next();
                    if ((num % 2) == 0)
                    {
                        ch = (char)(0x30 + ((ushort)(num % 10)));
                    }
                    else
                    {
                        ch = (char)(0x41 + ((ushort)(num % 0x1a)));
                    }
                    str = str + ch.ToString();
                }
                return str;
            }
    View Code
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  • 原文地址:https://www.cnblogs.com/love201314/p/4962978.html
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