How to Calculate the Difference in Hours Between Two DateTime Values in C#?

Calculating the Temporal Difference Between Datetime Values in Hours

When handling two datetime values in software, determining the temporal gap between them is a common requirement. In C#, the TimeSpan type is specifically designed for this purpose. To compute the difference between two datetime values, simply subtract one from the other.

TimeSpan? timeSpan = datevalue1 - datevalue2;

To retrieve the difference as the number of hours, you can utilize the TotalHours property of the TimeSpan object. However, if you're working with nullable Timespan variables, it's crucial to unwrap the nullable value before accessing the TotalHours property. This can be achieved as follows:

if (timeSpan != null)
{
    var hours = timeSpan.Value.TotalHours;
    // Use the 'hours' variable here
}

Alternatively, you can directly use the following syntax to calculate hours:

var hours = (datevalue1 - datevalue2).TotalHours;

By implementing these techniques, you can effectively calculate and display the temporal difference between two datetime values in terms of hours.

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