Folder.GetStorage Method (Outlook)

Gets a StorageItem object on the parent Folder to store data for an Outlook solution.

Version Added: Outlook 2007

expression .GetStorage(StorageIdentifier, StorageIdentifierType)

expression A variable that represents a Folder object.

Parameters

Name

Required/Optional

Data Type

Description

StorageIdentifier

Required

String

An identifier for the StorageItem object; depending on the identifier type, the value can represent an Entry ID, a message class, or a subject.

StorageIdentifierType

Required

OlStorageIdentifierType

Specifies the type of identifier for the StorageItem object.

Return Value

A StorageItem object that is used to store data for a solution.

The GetStorage method obtains a StorageItem on a Folder object using the identifier specified by StorageIdentifier and has the identifier type specified by StorageIdentifierType. The StorageItem is a hidden item in the Folder, which roams with the account and is available online and offline.

If you specify the EntryID for the StorageItem by using the olIdentifyByEntryID value for StorageIdentifierType, then the GetStorage method will return the StorageItem with the specified EntryID. If no StorageItem can be found using that EntryID or if the StorageItem does not exist, then the GetStorage method will raise an error.

If you specify the message class for the StorageItem by using the olIdentifyByMessageClass value for StorageIdentifierType, then the GetStorage method will return the StorageItem with the specified message class. If there are multiple items with the same message class, then the GetStorage method returns the item with the most recent PR_LAST_MODIFICATION_TIME. If no StorageItem exists with the specified message class, then the GetStorage method creates a new StorageItem with the message class specified by StorageIdentifier.

If you specify the Subject of the StorageItem, then the GetStorage method will return the StorageItem with the Subject specified in the GetStorage call. If there are multiple items with the same Subject, then the GetStorage method will return the item with the most recent PR_LAST_MODIFICATION_TIME. If no StorageItem exists with the specified Subject, then the GetStorage method will create a new StorageItem with the Subject specified by StorageIdentifier.

GetStorage returns an error if the store type of the folder is not supported. The following stores return an error when GetStorage is called:

  • Hotmail store

  • Internet Message Access Protocol (IMAP) stores

  • Delegate stores

  • Public folder stores

The Size of a StorageItem that is newly created is zero (0) until you make an explicit call on the Save method of the item.

For more information on storing data for a solution, see Storing Data for Solutions.

The following code sample in Visual Basic for Applications shows how to use the StorageItem object to store private solution data. It saves the data in a custom property of a StorageItem object in the Inbox folder. The following describes the steps:

  1. The code sample calls GetStorage to obtain an existing StorageItem object that has the subject "My Private Storage" in the Inbox. If no StorageItem with that subject already exists, GetStorage creates a StorageItem object with that subject.

  2. If the StorageItem is newly created, the code sample creates a custom property "Order Number" for the object. Note that "Order Number" is a property of a hidden item in the Inbox.

  3. The code sample then assigns a value to "Order Number" and saves the StorageItem object.

Sub AssignStorageData() 
 Dim oInbox As Outlook.Folder 
 Dim myStorage As Outlook.StorageItem 
 
 Set oInbox = Application.Session.GetDefaultFolder(olFolderInbox) 
 ' Get an existing instance of StorageItem, or create new if it doesn't exist 
 Set myStorage = oInbox.GetStorage("My Private Storage", olIdentifyBySubject) 
 ' If StorageItem is new, add a custom property for Order Number 
 If myStorage.Size = 0 Then 
 myStorage.UserProperties.Add "Order Number", olNumber 
 End If 
 ' Assign a value to the custom property 
 myStorage.UserProperties("Order Number").Value = 100 
 myStorage.Save 
End Sub 

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