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GetPrevious Method

Summary

Returns the item in the IOD Structure that immediately precedes the specified item.

Syntax
C#
VB
C++
Java
public DicomIod GetPrevious( 
   DicomIod iod, 
   bool tree 
) 
Public Function GetPrevious( _ 
   ByVal iod As DicomIod, _ 
   ByVal tree As Boolean _ 
) As DicomIod 
public DicomIod getPrevious(DicomIod iod, boolean 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

DicomIod class that contains the item in the IOD Structure that immediately precedes the item specified in iod.

Remarks

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. getpvtr.gif

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. getpvlst.gif

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:

If you evaluate the IOD Structure as a tree, you can also use the following methods to navigate the tree:

Requirements

Target Platforms

Help Version 20.0.2019.11.25
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