Prevent duplicate record entry if the address and city entered are the same

I'm trying to prevent duplicate record entry if the address and city entered are the same.  Here is my code.  But I get a syntax error I believe at  strCriteria = "Address = " & Me.txtAddress & " And city = " & Me.txtcity & ""

Private Function ErrorChecking()

    If Me.NewRecord = True Then

        Dim strCriteria As String

        strCriteria = "Address = " & Me.txtAddress & " And city = " & Me.txtcity & ""

        If DCount("ID", "CommissionEntry", strCriteria) > 0 Then
            MsgBox "Someone has already entered data for this address and city.  Are you sure you want to proceed?"
            Me.Undo
            Me.txtAddress.SetFocus
            ErrorChecking = True
        End If

    End If

End Function

Open in new window


AND

Private Sub Form_BeforeUpdate(Cancel As Integer)

    If ErrorChecking = True Then
        Cancel = True
        Exit Sub
    End If

End Sub

Open in new window

SteveL13Asked:
Who is Participating?
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

John TsioumprisSoftware & Systems EngineerCommented:
Try this
strCriteria = "Address = '" & Me.txtAddress & "' And city ='" & Me.txtcity & "'"

Open in new window

By the way for the City i would recommend instead of a text box to select it from a list (combobox ---> less mistakes) ...so in that case (In this case you will have a tables Cities with 2 fields
CityID, City)
[code]strCriteria = "Address = '" & Me.txtAddress & "' And city =" & Me.cboCity

Open in new window

0

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
SteveL13Author Commented:
Thank you.
0
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Microsoft Access

From novice to tech pro — start learning today.