Public Function GetPrevious( _
   ByVal iod As DicomIod, _
   ByVal tree As Boolean _
) As DicomIod

Visual Basic (Usage)	Copy Code
Dim instance As DicomIodTable Dim iod As DicomIod Dim tree As Boolean Dim value As DicomIod   value = instance.GetPrevious(iod, tree)

public DicomIod GetPrevious( 
   DicomIod iod,
   bool tree
)

public:
DicomIod^ GetPrevious( 
   DicomIod^ iod,
   bool tree
) 

Parameters

iod

An item in the IOD Structure.

tree

true to evaluate the IOD Structure as a tree, false to evaluate the IOD Structure as a list.

Return Value

• If the IOD Structure is evaluated as a tree structure, this method returns the previous item on the same level as iod with the same parent as iod. Please note that the numbering of the items in this illustration is arbitrary and does not imply order.
• 
  
  

  If the passed class is :	The method returns:
  Item 1	Item 2
  Item 3	Item 4
  Item 5	null
  Item 6	Item 7

  If the IOD Structure is evaluated as a list, the previous item in the list is returned. Please note that the numbering of the items in this illustration does indicate the order of the items when the IOD Structure is evaluated as a list.
  
  
  
  

  If the passed class is :	The method returns:
  Item 1	null
  Item 15	Item 14
  Item 5	Item 4
  Item 9	Item 8
  Item 22	item 21
  Item 25	item 24

  The following methods will also help you navigate the IOD Structure as either a tree or a list:
  
  
  • GetLast
  • GetFirst
  • GetNext
  If you evaluate the IOD Structure as a tree, you can also use the following methods to navigate the tree:
  
  
  • GetRoot
  • GetParent
  • GetChild

Target Platforms: Microsoft .NET Framework 3.0, Windows XP, Windows Server 2003 family, Windows Server 2008 family

Reference