摘要： 1 using System; 2 3 namespace DotNet.Utilities 4 { 5 public class RandomOperate 6 { 7 // 一：随机生成不重复数字字符串 8 private int rep = 0; 9 public string GenerateCheckCodeNum(int codeCount)10 {11 string str = string.Empty;12 long num2 = DateTi... 阅读全文