转换时间在C＃为十进制 [英] Convert Time to decimal in C#

问题描述

我需要做的，是有一个由用户输入的两个定义的字符串，

 在=字符串9 ：35; //上午
串出=11:55; //上午
  

和我需要减去他们，这样会得到总时数，他们签署其中应该等于：

 字符串总=2:20
  

然后，我需要的转换为十进制..所以，2:20就

 字符串小数=2.33; 
  

我不知道该怎么做，任何帮助，将不胜感激！

PS：ID也希望能够来计算，他们从一个十进制数被检查的总时间，所以基本上相反

解决方案

 的DateTime DT1 = DateTime.Parse（11:55）; 
日期时间DT2 = DateTime.Parse（9:35）; 
 
双跨=（DT1  -  DT2）.TotalHours; 
  

你实际需要的2:20或者是只是一个中间步骤？

编辑：如果你想回去，你只需要做的数学一点点。取小数剩余时间和乘以60，那么圆。这些将是分钟，所以只需将它们添加到小时。

what i need to do, is have two defined strings that is inputted by the user,

string in = "9:35"; //am
string out = "11:55"; //am

and i need to subtract them, so that would get the total hours that they were signed in. which should equal:

string total = "2:20"

then, i need to convert that into a decimal.. so, 2:20 would be

string decimal = "2.33";

I dont know how to do that, any help would be appreciated!

P.S: id also like to be able to calculate the total hours they were checked in from a decimal number, so basically the opposite

解决方案

DateTime dt1 = DateTime.Parse("11:55");    
DateTime dt2 = DateTime.Parse("9:35");

double span = (dt1 - dt2).TotalHours;

Do you actually need the "2:20" or is that just an intermediate step?

Edit: If you wanted to go back, you'd just need to do a little bit of math. Take the remainder of the decimal and multiply by 60, then round. Those will be the minutes, so just add them to the hours.

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