Calculate delay with string variable fornat as "dd-MM-yyyy HH:mm"

Syntax
1

Hello everyone. I need your help to calculate delay in minutes on survey solution using string variable ffornat as “dd-MM-yyyy HH:mm” (##-##-202# ##:##). I have to concatenate the date and day to take the date into account when calculating the delay for samples taken at night and stored the next day. Thank you.

2

Thank you have done it with (int)(
DateTime.ParseExact(base_vaginal_iso_time, “dd-MM-yyyy HH:mm”, null) -
DateTime.ParseExact(base_vaginal_time, “dd-MM-yyyy HH:mm”, null)
).TotalMinutes