How to compare and calculate two date

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How can I calculate how many days,hours,minutes,seconds will take repair of machine.

1. position - register machine error (format:

dd/MM/yyyy HH:mm:ss

)
2. position - repair this machine error.(format:

dd/MM/yyyy HH:mm:ss

)

now I would like calculate how many days,hours,minutes,seconds will take this repair of machine. (1.position - 2. position.

How can I do it?

Thank for advise

What I have tried:

_________________________________

Posted 14-Jan-19 21:03pm

Member 13711215

Updated 14-Jan-19 21:27pm

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2 solutions

Solution 1

Convert them to DateTime values using DateTime.TryParseExact[^], then subtract them. That will give you a TimeSpan[^] value that has the properties you need.

VB

Dim date1 As String = "30/12/2018 06:41:13"
Dim date2 As String = "02/01/2019 17:01:42"
Dim dt1 As DateTime

If Not DateTime.TryParseExact(date1, "dd/MM/yyyy HH:mm:ss", CultureInfo.InvariantCulture, DateTimeStyles.None, dt1) Then
    ... report problem to user ...
    Return
End If

Dim dt2 As DateTime

If Not DateTime.TryParseExact(date2, "dd/MM/yyyy HH:mm:ss", CultureInfo.InvariantCulture, DateTimeStyles.None, dt2) Then
    ... report problem to user ...
    Return
End If

Dim diff As TimeSpan = dt2 - dt1
Console.WriteLine(diff.Days)
Console.WriteLine(diff.Hours)
Console.WriteLine(diff.Minutes)
Console.WriteLine(diff.Seconds)

Posted 14-Jan-19 21:21pm

OriginalGriff

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Maciej Los · Accepted Answer · 2019-01-14T21:27:00

Solution 2

Please, read this first: Performing arithmetic operations with dates and times | Microsoft Docs[^]

VB.NET

Dim startTime As DateTime = DateTime.Now
Dim endTime As DateTime = DateTime.Now.AddDays(1).AddHours(5).AddMinutes(93).AddSeconds(75)
Dim span As TimeSpan = endTime.Subtract(startTime)
Console.WriteLine("Time Difference: {0} days, {1} hours, {2} minutes, {3} seconds", span.Days, span.Hours, span.Minutes, span.Seconds)

Result:

Time Difference: 1 days, 6 hours, 34 minutes, 15 seconds

Good luck!

Posted 14-Jan-19 21:27pm

Maciej Los

Updated 14-Jan-19 21:30pm

v2

Comments

Member 13711215 15-Jan-19 4:32am

How can I write result to label?

Maciej Los 15-Jan-19 4:43am

Me.Label1.Text = String.Format("Time Difference: {0} days, {1} hours, {2} minutes, {3} seconds", span.Days, span.Hours, span.Minutes, span.Seconds)

Member 13711215 15-Jan-19 5:41am

thank you

Maciej Los 15-Jan-19 5:46am

You're very welcome.