Check box problem...

[hrprabhu]

Hi All,

Private Sub chkAddToTaxZone_AfterUpdate()
    If chkAddToTaxZone Then
        Me.NoOfDays = NoOfDays
        Me.FNTotal = FNTotal
    Else
        Me.NoOfDays = (-1) * NoOfDays
        Me.FNTotal = (-1) * FNTotal
    End If
    Me.Requery
End Sub

I have a small database. In the form I have a check box called chkAddToTaxZone . I set the default value -1.

Basically I want it to change the value of two calculated fields from positive to negative when the check box value is 0.

When I check the value again, the values in these two calculated field does not change. I have to do it a few things.

What am I missing?

Raghu

[jforbes]

I'm not 100% sure what the items on the right side of the equal sign resolves to, but I'm guessing it is the same as what is on the left side. So the Textbox is being set to itself or set to itself times -1.
If this is the case, the way it is written, the sign will only change when the Checkbox is not ticked and it will leave the values alone when the Checkbox changes from unchecked to checked.
Changing the code to just the following will probably fix it:

    Me.NoOfDays = (-1) * NoOfDays
    Me.FNTotal = (-1) * FNTotal
    Me.Requery

[hrprabhu]

jforbes,

Thank you very much!

[NeoPa]

Raghu.

Imagine you have already cleared the CheckBox and set the values to negative.

1. Do you want them to be set back to positive when the CheckBox is set again?
2. Do you want them to be set back to positive when the CheckBox is cleared again after being set?
3. Do you want them to stay negative forever?

[hrprabhu]

Hi NeoPa

Basically toogle the values. If the check box is ticked, then the value should be positive if not negative.

Thanks for your time. Though I have been using Access since 1993, I did not start VBA till recently. Hence I am paying the price.

[NeoPa]

In that case JForbes' post #2 will suit you perfectly I think.

VBA is fun. Once you get into it i'm sure you'll be pleased you did and find you enjoy working with it :-)

[hrprabhu]

Thanks...Neopa Will try

[hrprabhu]

Hi Neopa

Got it working to what I want it to do.

Private Sub chkAddToTaxZone_AfterUpdate()
        Me.NoOfDays = (-1) * NoOfDays
        Me.FNTotal = (-1) * FNTotal
End Sub

It is toggling the values from positive to negative and vice versa.

[NeoPa]

Excellent. I was convinced Joe's suggestion would work for you.

As a matter of interest you can also express it as :

Private Sub chkAddToTaxZone_AfterUpdate()
    With Me
        .NoOfDays = -.NoOfDays
        .FNTotal = -.FNTotal
    End With
End Sub

That won't make it work better as it already works fine. It is simply a tidier way of expressing it in VBA.

[hrprabhu]

Thanks NeoPa...Access is like an ocean. I thought I knew a lot, now I feel I have just dipped my toes.

Thanks for your help...

[NeoPa]

hrprabhu:
Thanks NeoPa...Access is like an ocean. I thought I knew a lot, now I feel I have just dipped my toes.

That's so very true. I get the same feeling sometimes ;-)

However, it's not about what you don't know. It's about what you know. As long as you keep inreasing the latter then the size of the former will be less and less important.