how to calculate hour between different days

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hi all,
i want to calculate hours difference between two datetime pickers. but difference always comes out to be zero.
what will i do.
neaS

Posted 10-Aug-11 0:04am

neeraj24may

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Suresh Suthar 10-Aug-11 6:06am

Post your code. This will help us to help you.

2 solutions

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Mohammad A Rahman · Answer 1 · 2011-08-10T01:08:00

might be helpful,

int hours = (dateTimePicker1.Value - dateTimePicker2.Value).TotalHours

There is implementation difference between TotalHours and Hours,

TotalHours implementation is something like below,

return (this._ticks * 2.7777777777777777E-11);

Hours implementation is something like below,

return (int) ((this._ticks / 0x861c46800L) % 0x18L);

Future Ref:

Timespan.TotalHours[^]
Timespan.Hours[^]

and .Net Reflector/[^] is the best help.

:)

*dan!sh* · Answer 2 · 2011-08-10T00:07:00

Solution 1

Doesn't this works?

C#

int hours = (dateTimePicker1.Value - dateTimePicker2.Value).Hours

Posted 10-Aug-11 0:07am

dan!sh

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neeraj24may 10-Aug-11 6:41am

no,it show an error"int does not contain a defination for hours"

dan!sh 10-Aug-11 6:44am

You may have something wrong there. Cna you post your code?

#realJSOP 10-Aug-11 7:40am

You have to use TotalHours to account for the possiblity of more than 0 days in the resulting timespan object.

Reiner Lim 29-Nov-12 3:52am

string hours = (dateTimePicker2.Value - dateTimePicker1.Value).TotalHours.ToString();

textBox1.Text = hours;