Date trigger

Getting Started
1

Is there a simple way to display a messagebox at a specific date and time?
I don’t believe the two var are comparing properly, below. Hopefully this makes sense

Using Xojo.Core
var d1 As Date = Date.Now
var d2 As New Date(2020, 8, 13, 13, 05,TimeZone.Current)

if d1 < d2 then
messagebox ("<")
else
messagebox (“end”)
end if

Also…I can’t get DateTime to work…can’t find type error…wondering if something else needs to be loaded???

2 

Dim d1 As Xojo.Core.Date = Xojo.Core.Date.Now
Dim d2 As New Xojo.Core.Date(2020, 8, 9, 12, 28,0,  Xojo.Core.TimeZone.Current)

// If d1. < d2 Then (see waynes comment following this)
If d1.SecondsFrom1970 < d2.SecondsFrom1970 Then
  MsgBox ("<")
Else
  MsgBox ("end")
End If

EDIT :
Your constructor is wrong and doesnt have enough params
And there is ambiguity around the types (regardless of the fact that you have a using clause since there is a global date class and one in Xojo.Core as well - be explicit and it helps)
And compare the total seconds (as Wayne suggested after my post) instead of the objects references which is what < does (unfortunately)

3

According the the documentation for Xojo.Core.Date you need to compare the secondsfrom1970 properties. See http://documentation.xojo.com/api/deprecated/xojo.core.date.html.

DateTime was introduced in version 2019R2 and is not yet available for iOS projects.

4

Thanks Wayne…I saw the secondsfrom1970 option but was hoping for something a little easier, but I can work with this.

And thanks for the note about datetime not being available on IOS projects, glad to know it wasn’t me.

5

Thanks Norman (and Wayne) totally makes sense now but I’d still be at it (or had given up) if it wasn’t for your help. Thanks!..now onto the next one :smile:

6

Thanks again…any reason why “=” wouldn’t work? I’ve set it up on a timer to run every 1000ms but I can’t seem to get this to trigger at exactly the right time?

7

Because the class doesnt implement operator_compare
So = means “are they referring to the same instance” not “are their total seconds the same”

8

got it…makes total sense…thanks again. Will go back and watch some beginner tutorials again…thanks for your time