const now = new Date(); const baseDate = new Date(2000, 0, 1); // 2000-01-01 const days = Math.floor((now - baseDate) / (1000 * 60 * 60 * 24)).toString(16).replace("0x", "").padStart(4, '0'); js转c#代码
```csharp DateTime now = DateTime.Now; DateTime baseDate = new DateTime(2000, 1, 1); // 2000-01-01 TimeSpan diff = now - baseDate; string days = Convert.ToString((int)diff.TotalDays, 16).PadLeft(4, '0'); ``` 代码说明: 1. `DateTime.Now` 获取当前时间 2. `DateTime` 构造函数创建基准日期(注意C#月份是1-12) 3. `TimeSpan` 计算时间差 4. `TotalDays` 获取总天数 5. `Convert.ToString` 将天数转为16进制字符串 6. `PadLeft` 补零到4位 需要注意的逻辑点: 1. C#的月份范围是1-12,而JavaScript是0-11 2. C#的`DateTime`减法直接返回`TimeSpan`对象 3. C#的16进制转换不会自动添加"0x"前缀,无需移除 [2025-07-22 22:18:49 | AI写代码神器 | 211点数解答]
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