SPUserStorageCollection class
Represents a collection of SPUserStorage objects used to maintain storage information for all users of a Web Part Page.
System.Collections.ReadOnlyCollectionBase
Microsoft.SharePoint.SPUserStorageCollection
Namespace: Microsoft.SharePoint
Assembly: Microsoft.SharePoint (in Microsoft.SharePoint.dll)
Use the LengthByUser property of the SPFile class to return a collection of user-storage objects that contain information about each user of a Web Part Page. Use an indexer to return a single user-storage object from the collection. For example, if the collection is assigned to a variable named myUserStorages, use myUserStorages[index] in C#, or myUserStorages(index) in Microsoft Visual Basic, where index is the index number of the user-storage object in the collection. You can also use a foreach statement (For Each in Visual Basic) to iterate through the collection and return the user-storage objects.