ContactItem.EntryID Property

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Outlook Developer Reference

Returns a String representing the unique Entry ID of the object. Read-only.

Syntax

expression.EntryID

expression   A variable that represents a ContactItem object.

Remarks

This property corresponds to the MAPI property PR_ENTRYID.

A MAPI store provider assigns a unique ID string when an item is created in its store. Therefore, the EntryID property is not set for an Outlook item until it is saved or sent. The Entry ID changes when an item is moved into another store, for example, from your Inbox to a Microsoft Exchange Server public folder, or from one Personal Folders (.pst) file to another .pst file. Solutions should not depend on the EntryID property to be unique unless items will not be moved. The EntryID property returns a MAPI long-term Entry ID. For more information about long- and short-term EntryIDs, search http://msdn.microsoft.com for PR_ENTRYID.

Example

This Visual Basic for Applications (VBA) example uses the EntryID property to compare the Entry ID of one contact to the Entry ID of a contact returned by a search operation to determine whether the objects represent the same contact. Replace the name with a valid contact name in your Contacts folder before running this example.

Visual Basic for Applications 
  Sub UseEntryID()
    Dim myNamespace As Outlook.NameSpace
    Dim myContacts As Outlook.Folder
    Dim myItem1 As Outlook.ContactItem
    Dim myItem2 As Outlook.ContactItem
    
    Set myNameSpace = Application.GetNamespace("MAPI")
    Set myContacts = myNameSpace.GetDefaultFolder(olFolderContacts)
    Set myItem1 = myContacts.Items.Find("[FirstName] = ""Dan""")
    Set myitem2 = myContacts.Items.Find("[FileAs] = ""Wil"" and [FirstName] = ""Dan""")
    If Not TypeName(myitem2) = "Nothing" Then
        If myItem1.EntryID = myitem2.EntryID Then
       	    MsgBox "These two contact items refer to the same contact."
   	End If
    Else
    	MsgBox "The contact items were not found."
    End If
End Sub

See Also