Accessing Microsoft Access report database opens twice why?

Good Afternoon,

I have a vb.net application with an access database backend.  Database is old and has been converted up to 2003 I think but it originated from an older version of access than 2003.

I have been given no choice other than to build the front end for the reservations and to use existing reports that sit inside the database.

I have all working BUT when one of the reports is called for preview with the below (using linkbutton inside gridview) the database and report open TWICE.  My questions are does anyone know why?  If so can you tell me what I am doing wrong?  If not is there any other way to do this in vb.net using the existing reports?


Public Sub thesearchresults_RowCommand(ByVal o As Object, ByVal e As GridViewCommandEventArgs) Handles thesearchresults.RowCommand

        If e.CommandName = "view" Then
            Dim index As Integer = Convert.ToInt32(e.CommandArgument)
            Dim row As GridViewRow = thesearchresults.Rows(index)
            Dim getreservation As Integer = row.Cells(1).Text
            'MsgBox(getreservation)
            Try

                Dim oAccess As Microsoft.Office.Interop.Access.Application
             oAccess = CreateObject("Access.Application")

                ' Open the database
             oAccess.OpenCurrentDatabase(dblocation)
             oAccess.DoCmd.OpenReport("Confirmation", 2, WhereCondition:="[Reservation_ReservationNum]=" & getreservation & "")
 
                oAccess.DoCmd.Maximize()
                oAccess.Visible = True
            Catch ex As Exception
                'MsgBox(ex.Message)
                'MsgBox(ex.StackTrace)
                errhandler.WriteError("manage-reservation.aspx and procedure is thesearchresults rowcommand and user is " & Session("theuser"), ex.Message & " " & ex.StackTrace)
                Response.Redirect("CustomError.aspx?thetype=" & ex.Message)
            Finally
                oAccess = Nothing
            End Try
            End If
    End Sub
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thamilto0410Asked:
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Jim Dettman (Microsoft MVP/ EE MVE)President / OwnerCommented:
It's just this one report?   The above code looks fine...I don't see any issues.

Jim.
thamilto0410Author Commented:
JDettman--So far it is just this one report.  I have many others in this access DB I inherited but so far the others I only need to generate a printout which works well ie:open db send to printer close db.  For this report the user needs the ability to preview and when I open for preview the DB opens and displays report twice.
DoveTailsCommented:
Sounding like the report may be the issue.
Any chance there's something going on with the report itself ?....
such as code for a text box that fits multiple records    ie.   IIf([Field])="1","2"
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thamilto0410Author Commented:
DoveTails:  As I haven't worked with Access or its reports for many years (primarily develop with Oracle) I had not thought of that.  I will tear the report down looking for trouble and let you know.  Thanks.
Jim Dettman (Microsoft MVP/ EE MVE)President / OwnerCommented:
Yes, I would try and use a copy of Access and see if the report opens normally there.

Jim.
thamilto0410Author Commented:
JDettman :  The report does open normally in access and there is not anything wrong with the query it does run and populate the report with all fields pulled in the only problem is that in the vb app the db opens twice and the report displays twice.  

Any other suggestions from anyone?
Jim Dettman (Microsoft MVP/ EE MVE)President / OwnerCommented:
Any chance your code is getting called 2x?  Put a message box up or something when you run through the routine to see if it's getting called twice.

Jim.

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thamilto0410Author Commented:
JDettman:  You are correct.  I put in the msgbox and it displays twice so the procedure is getting called twice.  I am using a linkbutton and onrowcommand.  so what do I do change to something else?
thamilto0410Author Commented:
Thank you JDETTMAN.  I figured it out.  I AM AN IDIOT.  Your last post about the procedure getting called twice helped me to get my head out of the clouds and stop blaming it on the DB and to go over the code again and I KNOW NOT TO call the procedure in the gridview and in the codebehind but I had accidentally done that and then could not see the forest for the trees.  THANKS SO MUCH.
Jim Dettman (Microsoft MVP/ EE MVE)President / OwnerCommented:
I wouldn't call yourself an idot; stuff like that is easy to do!  Programming is a complicated business and computers never let you forget a mistake<g>.  You should see some of the ones I've pulled over the years...

Glad to hear you've got it figured out.

Jim.
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