如何使用VB.NET计算运行时间 [英] How to calculate running hour using VB.NET

问题描述

如何计算日期时间格式的两个日期之间的运行小时数（dd-MM-yy HH：mm）。例如，如果Onload datetime = 12-01-17 20:10 and offload datetime = 23-01-17 07:10



我尝试过：

How to calculate running hour between two dates in datetime format (dd-MM-yy HH:mm). eg if Onload datetime = 12-01-17 20:10 and offload datetime = 23-01-17 07:10

What I have tried:

Dim Date1 As Date
       Dim Date2 As Date
       Dim DateTime As TimeSpan
       Dim diff As Double

       Date1 = txtOnDT1.Value.ToShortDateString
       Date2 = txtOffDT1.Value.ToShortDateString
       DateTime = (Date1 - Date2)
       diff = DateTime.TotalDays

       MsgBox(Date1)
       MsgBox(Date2)
       MsgBox(diff)

推荐答案

尝试使用：

Try using:

diff = DateTime.TotalHours

我现在得到它 - 停止玩字符串：

[edit]
I get it now - stop playing with strings:

If Not DateTime.TryParse(txtOnDT1.Text, Date1) Then
	' REPORT PROBLEM TO USER
	Return
End If
If Not DateTime.TryParse(txtOffDT1.Text, Date2) Then
	' REPORT PROBLEM TO USER
	Return
End If
DateTime = (Date1 - Date2)
diff = DateTime.TotalHours

或者如果这些是DateTimePickers，则直接使用Value属性（在这种情况下，更改名称！）

[/ edit]

Or use the Value property directly if these are DateTimePickers (and in that case, change the names!)
[/edit]

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