时间格式，数字格式

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1

请问如何把两个时间的差写成几分几秒的格式？怎么控制一个数字的小数位？
我计算了一个持续时长(Now - StartTime).TotalMinutes)这需要再计算分钟和秒，而且秒的小数位太长。

2

用timespan 数据类型

  1. image

  2. image

  3. 分种 = difference.Minutes

  4. 秒 = difference.Seconds

image

控制小数位 : 用 Math.Round
image

3

应该是这样
Main1.xaml (10.3 KB)

1. totalMinutes = difference.TotalMinutes  (157.633333....)
2. seconds = totalMinutes Mod 1  (0.6333....)
3. seconds = Math.Round(seconds * 60, 2) (38)
4. totalMinutes = Math.Floor(totalMinutes) (157)

image

4

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