Leadtools.Dicom Namespace > DicomDataSet Class : GetPreviousKey Method |
public DicomElement GetPreviousKey( DicomElement element, bool tree )
'Declaration Public Function GetPreviousKey( _ ByVal element As DicomElement, _ ByVal tree As Boolean _ ) As DicomElement
'Usage Dim instance As DicomDataSet Dim element As DicomElement Dim tree As Boolean Dim value As DicomElement value = instance.GetPreviousKey(element, tree)
public DicomElement GetPreviousKey( DicomElement element, bool tree )
public DicomElement getPreviousKey(DicomElement element, boolean tree)
public: DicomElement^ GetPreviousKey( DicomElement^ element, bool tree )
If the passed object points to: | The method returns an object pointing to: |
---|---|
Item 1 | Item 2 |
Item 3 | Item 4 |
Item 5 | null |
Item 6 | Item 7 |
If the Data Set is evaluated as a list, the previous item in the list is returned. Please note that the numbering of the items in the following illustration does indicate the order of the items when the Data Set is evaluated as a list.
If the passed object points to: | The method returns an object pointing to: |
---|---|
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 Data Set as either a tree or a list:
If you evaluate the Data Set as a tree, you can also use the following methods to navigate the tree: