[FAQ's OD] How do I get the number of items in a folder?

Just a quick example on retrieving the number of items in a given folder in a given account.
The count is the number of items in the folder and any subfolders recursively.


VB.NET 2002-2008 and Outlook 2000-2007

Code:

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Option Explicit On
Option Strict On
'Add a COM reference to Outlook xx.0 Object Library
Imports Microsoft.Office.Interop

'Add a Button1 and TextBox1 to your form.
Public Class Form1

    Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
        Try
            Dim oApp As Outlook.Application
            'Create an application instance
            oApp = DirectCast(CreateObject("Outlook.Application"), Outlook.Application)
            'Logon to your desired session providing the profile name and password
            oApp.Session.Logon("YouProfileNameGoesHere", Me.TextBox1.Text, False, False)
            'Display the count for the Inbox
            MessageBox.Show("Item Count: " & oApp.GetNamespace("MAPI").GetDefaultFolder( _
                            Outlook.OlDefaultFolders.olFolderInbox).Items.Count.ToString, _
                            "Count", MessageBoxButtons.OK)
            'Optionally logoff and close outlook
            'oApp.Session.Logoff()
            'oApp.Quit()
            'oApp = Nothing
        Catch ex As Exception
            MessageBox.Show(ex.Message.ToString, "Error", MessageBoxButtons.OK)
        End Try
    End Sub

End Class

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