How to access DeletedItems and SentMail folders in Outlook 2007 through MAPI using VB.NET ?

Hello,

Hope somebody can help me on this :)

Below code works fine (If I intend to read the messages in inbox folder). But when I want to read the messages in Deleted Items folder or Sent Items folder, I receive the error message below:

"Could not complete the operation. One or more parameter values are not valid."

I checked the forums and googled it but I didn't be able to find anything on this. Every code sample I looked at is exactly the same as below and the coders claim it works. But it works only when you read inbox folder, not DeletedItems and SentMail folders.

Thanks In Advance

P.S. I change the 4th line like below when I want to read the messages in Sent Items folder:
 Dim olInbox As Outlook.MAPIFolder = olNS.GetDefaultFolder(Outlook.OlDefaultFolders.olFolderSentMail)


////////////////// CODE /////////////////////
////////////////// CODE /////////////////////
////////////////// CODE /////////////////////
Dim olApp As Outlook.Application = New Outlook.Application()
        Dim olNS As Outlook.NameSpace = olApp.GetNamespace("MAPI")
        olNS.Logon(null, null, False, True)
        Dim olInbox As Outlook.MAPIFolder = olNS.GetDefaultFolder(Outlook.OlDefaultFolders.olFolderInbox)
        Dim olItems As Outlook.Items = olInbox.Items
        Dim i As Integer
        Try
            If olItems.Count > 0 Then
                ListBox1.Items.Clear()
                For i = 1 To olItems.Count
                    Dim email As Outlook.MailItem = olItems.Item(i)

                    ListBox1.Items.Add(email.Subject & " >>> FROM: " & email.SenderName)
                Next
                Label1.Text = "Emails: " & (i - 1).ToString
                olNS.Logoff()
            End If
        Catch ex As Exception
            lblMessage.Text = ex.ToString
        Finally
            olApp = Nothing
            olNS = Nothing
            olItems = Nothing
            olInbox = Nothing
        End Try
/////////////////////////// CODE //////////////////////
/////////////////////////// CODE //////////////////////
/////////////////////////// CODE //////////////////////
LVL 3
VBDotNetCoderAsked:
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VBDotNetCoderConnect With a Mentor Author Commented:
Hello guyz.
I'm sorry.
I am coding a software which will read all the users' mailboxes recursively and feed the output (attachments, attachment extensions and their sizes) to SQL Server. Since my code is a little complex (hard to read and understand) I found a sample code from the internet and put it here because part of it is almost the same with mine. But I didn't see the most important part : I'm using GetSharedDefaultFolder command and this example is using GetSharedFolder.

After seeing this, I googled it and now I know I cannot use GetSharedDefaultFolder command to access other users' DeletedItems, Outbox and SentMail folders. Hope this helps to somebody. I'll have to code the program from scratch using another method since it seems impossible using MAPI now....

Thank you all for your time.
0
 
Meir RivkinFull stack Software EngineerCommented:
i used this post: http://codegain.com/articles/officedev/howto/how-to-access-the-outlook-contacts-using-C-Sharp.aspxconverted it to vb.net.to get SentMail folder replce:Dim contacts As Outlook.MAPIFolder = oNS.GetDefaultFolder(Outlook.OlDefaultFolders.olFolderContacts)with:Dim contacts As Outlook.MAPIFolder = oNS.GetDefaultFolder(Outlook.OlDefaultFolders.olFolderSentMail)to get DeletedItems folder replce:Dim contacts As Outlook.MAPIFolder = oNS.GetDefaultFolder(Outlook.OlDefaultFolders.olFolderContacts)with:Dim contacts As Outlook.MAPIFolder = oNS.GetDefaultFolder(Outlook.OlDefaultFolders.olFolderDeletedItems)
Private Shared Sub Main(args As String())
	Dim oApp As New Outlook.Application()

	Dim oNS As Outlook.NameSpace = oApp.GetNamespace("mapi")
	oNS.Logon("Outlook", Missing.Value, False, True)
	Dim contacts As Outlook.MAPIFolder = oNS.GetDefaultFolder(Outlook.OlDefaultFolders.olFolderContacts)

	Dim oItems As Outlook.Items = contacts.Items
	Try
		For i As Integer = 0 To oItems.Count - 1
			Dim contact As Outlook.ContactItem = DirectCast(oItems(i), Outlook.ContactItem)

			Console.WriteLine(contact.Email1Address)
		Next

		Console.ReadKey()
	Catch ex As Exception
		Throw ex
	Finally
		oItems = Nothing
		oNS.Logoff()
		oNS = Nothing
		oApp = Nothing
	End Try
End Sub

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ZhaolaiCommented:
After replacing
olNS.Logon(null, null, False, True)
with
olNS.Logon(Nothing, Nothing, False, True)
 
 your code works fine for me in VB 2008.
 
0
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ZhaolaiCommented:
 After replacing
olNS.Logon(null, null, False, True)
with
olNS.Logon(Nothing, Nothing, False, True)
 
Your code works fine with both DeletedItems and SentMail folders for me in VB 2008.
 
                               
0
 
Meir RivkinFull stack Software EngineerCommented:
great :)
glad i helped you.
0
 
ZhaolaiCommented:
@sedgwick,

Oooops, I am referring to the asker's code in the question. hehe...
0
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