asked on

Using JRO in VB.Net

Hi,
Is it possible for me to use JRO in VB.Net?? I have tried the following synchrnization code and some how it is not working:

Public Function synchDB(ByVal mainDB As String, ByVal secondDB As String)
Dim jrB As JRO.Replica

jrB = New JRO.Replica
Try
jrB.ActiveConnection = mainDB

jrB.Synchronize(secondDB, JRO.SyncTypeEnum.jrSyncTypeImpExp,
& JRO.SyncModeEnum.jrSyncModeDirect)

jrB = Nothing
Catch ex As Exception
MsgBox(ex.Message)
End Try
End Function

This is how I call the function out:

synchDB(CStr(Application.StartupPath & "\Branch.mdb"), CStr(Application.StartupPath
& "\tempDB.mdb"))

when the code reach the execution of "jrB.ActiveConnection = mainDB" it shows error which I am not quite sure how to solve. It shows the following error message:

"Arguments are of wrong type, are out of acceptable range, or are in conflict with one another"

Can anyone tell me what's the reason for the error message?? Show me how to solve it please. Thanks

rpter

Hi,

This should work;

Public Function synchDB(ByVal mainDB As String, ByVal secondDB As String) As Boolean

'Create an instance of Replica object
Dim dbRep As New JRO.Replica

' Connection
Dim strConn As String = "Provider=Microsoft.JET.OLEDB.4.0;Data Source = " & mainDB

' use a try statement as we'd get an error if it is already replicable
Try
dbRep.MakeReplicable(mainDB, True)
Catch
End Try

Try
' Call CreateReplica method to create replica of the database
dbRep.CreateReplica(secondDB, "Replica of Database", jrRepTypeFull)
Catch ex As Exception
MsgBox(ex.Message)
Return False
End Try

Return True

End Function

Roland

Daniellus83

Maybe this helps you (a few examples I found): Use ADO.NET!

'===============================================================================
' Desc : Compact a database (MDB)
' Param :
' dbPathAndName : The path and name of the DB to compact. If nothing is
' set for this variable, the system will take the current
' DB (set in GetDBInfo)
' MakeBackup : If its true make a copy of the DB
' Return: <nothing>
'===============================================================================
Public Sub CompactDatabase(Optional dbPathAndName As String, Optional MakeBackup As Boolean)
Dim JRO As New JRO.JetEngine
If dbPathAndName <> "" Then
If MakeBackup Then Call FileCopy(dbPathAndName, dbPathAndName & ".bak")
JRO.CompactDatabase "Provider=Microsoft.Jet.OLEDB.4.0;" & _
"Data Source=" & dbPathAndName, _
"Provider=Microsoft.Jet.OLEDB.4.0;" & _
"Data Source=" & App.Path & "\dtnetCompact.mdb;" & _
"Jet OLEDB:Engine Type=4"
Call Kill(dbPathAndName)
Name App.Path & "\BakCompact.mdb" As dbPathAndName
Else
Call GetDBInfo
If MakeBackup Then Call FileCopy(dbPath & dbFileName, dbPath & dbFileName & ".bak")
JRO.CompactDatabase "Provider=Microsoft.Jet.OLEDB.4.0;" & _
"Data Source=" & dbPath & dbFileName, _
"Provider=Microsoft.Jet.OLEDB.4.0;" & _
"Data Source=" & App.Path & "\dtnetCompact.mdb;" & _
"Jet OLEDB:Engine Type=4"
Call Kill(dbPath & dbFileName)
Name dbPath & "\BakCompact.mdb" As dbPath & dbFileName
End If
Set JRO = Nothing
End Sub

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On this URL (http://www.codeproject.com/books/186100558x_16.asp) I found this text:

JRO In Managed Applications
ADO.NET does not provide direct support for features such as compacting a database, database replication, replica synchronization, setting passwords, and encryption on databases, and so on. These features are available in the classic ADO model through Jet and Replication Objects (JRO). An application can provide all these features by using Interop to access JRO objects....
----------------------------------------------------------------------------------------------------------------------------------------------------------------------

JohnWoo

ASKER

hmmm................good link but are the methods you proposed could synchronized 2 replicated Access databases?? My situation is I am trying to synchronize 2 replicated access databases with coding.

rpter

did you try my sample? that should do it...

JohnWoo

ASKER

I have tried it but that only allow me to replicate database, not synchronizing them.

ASKER CERTIFIED SOLUTION

rpter

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JohnWoo

ASKER

ok...thanks......let me try and see first.

kmcbrearty

JohnWoo,

I don't know if you are still trying to find the answer on this or not. I posted the same exact question and was able to determine the problem. You can view the following question to see how to resolve it:

https://www.experts-exchange.com/questions/21414739/Synchronize-Replicated-Access-Database-using-VB-NET.html

Basically you need to create an ADODB connection and pass that to the ActiveConnection Property.

Thank you,
Kevin McBrearty