In VBA, there is no built-in time data type like there is for dates. However, you can still work with time values using the Date data type and the TimeValue function. Let’s explore how this works in more detail.
The Date Data Type
The Date data type in VBA represents both date and time values. When you assign a value to a variable declared as Date, it includes both the date and the current system time.
Dim myDateTime As Date myDateTime = Now
In this example, the variable myDateTime will hold the current date and time.
The TimeValue Function
If you only want to extract the time portion from a date-time value or if you want to work specifically with time values, you can use the TimeValue function. This function returns a Variant value that represents only the time part of a date-time value.
Here’s an example:
Dim myTime As Variant myTime = TimeValue(Now)
In this case, myTime will only contain the current time without any date information.
Working with Time Values
Once you have extracted or assigned a time value using either Date or TimeValue, you can perform various operations on it. For example:
- Addition/Subtraction: You can add or subtract time values using simple arithmetic operators. For instance:
Dim startTime As Date Dim endTime As Date startTime = #9:00:00 AM# endTime = startTime + TimeValue("01:30:00")
In this example, endTime will be set to 10:30:00 AM, as we added 1 hour and 30 minutes to the start time.
Dim myTime As Variant myTime = TimeValue(Now) MsgBox Format(myTime, "hh:mm AM/PM")
This code will display a message box with the current time in the format “12:34 PM”.
Although VBA does not have a specific time data type, you can still work with time values using the Date data type and the TimeValue function. By understanding how these elements work together, you can effectively handle and manipulate time-related operations in your VBA projects.