i have created add-in for Outlook 2007 . but when i run outlook the commandbar button which should be appear on standard bar , does not appear.
i think there is a problem in register of Add-in.
the code are as follows :

imports Extensibility
Imports System.Runtime.InteropServices
Imports Microsoft.Office.Core
Imports Microsoft.Office.Interop



#Region " Read me for Add-in installation and setup information. "
' When run, the Add-in wizard prepared the registry for the Add-in.
' At a later time, if the Add-in becomes unavailable for reasons such as:
'   1) You moved this project to a computer other than which is was originally created on.
'   2) You chose 'Yes' when presented with a message asking if you wish to remove the Add-in.
'   3) Registry corruption.
' you will need to re-register the Add-in by building the $SAFEOBJNAME$Setup project, 
' right click the project in the Solution Explorer, then choose install.
#End Region

<GuidAttribute("F5F9500E-08F4-4391-B2F7-29FDE0BB4C23"), ProgIdAttribute("ISOLAddin.Connect")> _
Public Class Connect
	
	Implements Extensibility.IDTExtensibility2


    Dim applicationObject As Object
    Dim addInInstance As Object
    Dim WithEvents MyButton As Microsoft.Office.Core.CommandBarButton
    Dim OApp As Outlook.Application



	
	Public Sub OnBeginShutdown(ByRef custom As System.Array) Implements Extensibility.IDTExtensibility2.OnBeginShutdown
        MsgBox("Our custom Add-in is unloading.")
        MyButton.Delete()
        MyButton = Nothing
    End Sub
	
	Public Sub OnAddInsUpdate(ByRef custom As System.Array) Implements Extensibility.IDTExtensibility2.OnAddInsUpdate
	End Sub
	
	Public Sub OnStartupComplete(ByRef custom As System.Array) Implements Extensibility.IDTExtensibility2.OnStartupComplete
       


        Dim ComBar As CommandBars
        Dim StdBar As CommandBar
        Dim OAppExpl As Outlook.Explorer
        OAppExpl = CType(OApp.ActiveExplorer, Outlook.Explorer)

        ComBar = OAppExpl.CommandBars
        If ComBar Is Nothing Then
            ComBar = OApp.ActiveExplorer.CommandBars
        End If

        ComBar = applicationObject.CommandBars()
        StdBar = ComBar.Item("Standard")
        If StdBar Is Nothing Then
            StdBar = ComBar.Item("Database")
        End If

        MyButton = CType(StdBar.FindControl(Tag:="My Custom Button"), CommandBarButton)

        If MyButton Is Nothing Then
            MyButton = CType(StdBar.Controls.Add(Type:=MsoControlType.msoControlButton, Temporary:=False), CommandBarButton)

            With MyButton
                .Caption = "My Custom Button"
                .Style = MsoButtonStyle.msoButtonCaption
                .Tag = "My Custom Button"
                .OnAction = "!<ISOLAddin.connect>"
                .Visible = True
            End With
        End If
        MsgBox("Started in " & OApp.Name & ".")

        ComBar = Nothing
        StdBar = Nothing


    End Sub
	
	Public Sub OnDisconnection(ByVal RemoveMode As Extensibility.ext_DisconnectMode, ByRef custom As System.Array) Implements Extensibility.IDTExtensibility2.OnDisconnection
        If RemoveMode <> ext_DisconnectMode.ext_dm_HostShutdown Then
            Call OnBeginShutdown(custom)
        End If
        OApp = Nothing

    End Sub
	
	Public Sub OnConnection(ByVal application As Object, ByVal connectMode As Extensibility.ext_ConnectMode, ByVal addInInst As Object, ByRef custom As System.Array) Implements Extensibility.IDTExtensibility2.OnConnection
        MsgBox("On Connection In MyAddin")
        applicationObject = application
        addInInstance = addInInst

        If connectMode <> ext_ConnectMode.ext_cm_Startup Then
            Call OnStartupComplete(custom)
        End If

	End Sub

    Private Sub MyButton_Click(ByVal Ctrl As Microsoft.Office.Core.CommandBarButton, ByRef CancelDefault As Boolean) Handles MyButton.Click
        MsgBox("Our CommandBar button was pressed!")
    End Sub
End Class

please tell me , what is the problem in this ?

Thanks !

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