Question

I have two string variables such as StartTime and EndTime. I need to Calculate the TotalTime by subtracting the EndTime with StartTime.

The Format of StartTime and EndTime is as like follows:

    StartTime = "08:00 AM";
    EndTime = "04:00 PM";

TotalTime in Hours and Mins Format.
How to calculate this using C#?

Answer 1

Convert them to DateTime and substract one from other to get TimeSpan.

DateTime StartTime = DateTime.Parse("08:00 AM");

DateTime EndTime  = DateTime.Parse("04:00 PM"); // It converts this to 1600.

TimeSpan ts = EndTime - StartTime;

When i run above code it is giving me

ts.Days              // 0
ts.Hours             // 8
ts.Milliseconds      // 0
ts.Minutes           // 0
ts.Seconds           // 0
ts.Ticks             // 288000000000
ts.TotalDays         // 0.3333333333333333331
ts.TotalHours        // 8.0
ts.TotalMilliseconds // 28800000.0
ts.TotalMinutes      // 480.0
ts.TotalSeconds      // 28800.0

to get what you want.