MoveFirstKey method (ILEADDicomDS)
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Overview |
Refer to Working with Key Elements. |
Remarks
Updates the CurrentElement property to the first key element in the DICOM Dir Data Set. The result depends on whether the DICOM Dir Data Set is evaluated as a list or a tree.
If the DICOM Dir Data Set is evaluated as a tree structure, this method updates the CurrentElement property with the first key element on the same level and with the same parent as the key element contained in the CurrentElement property. Please note that the numbering of the items in this first illustration is arbitrary and does not imply order.
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If the CurrentElement property contains: |
The CurrentElement property will be updated with: |
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Item 1 |
Item 2 |
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Item 3 |
Item 4 |
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Item 5 |
Item 5 |
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Item 6 |
Item 7 |
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NULL |
Item 2 |
If the DICOM Dir Data Set is evaluated as a list, the CurrentElement property is updated with the first key element in the list. Please note that the numbering of the items in this illustration does indicate the order of the items when the DICOM Dir Data Set is evaluated as a list.
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If the CurrentElement property contains: |
The CurrentElement property will be updated with: |
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NULL |
Item 1 |
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Item 12 |
Item 1 |
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Item 14 |
Item 1 |
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Item 22 |
Item 1 |
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Item 25 |
Item 1 |
The following methods will also help you navigate the DICOM Dir Data Set as either a tree or a list:
If you evaluate the DICOM Dir Data Set as a tree, you can also use the following methods to navigate the tree:
Note: Visual Basic users can either check the return value of the method, or capture and process errors to determine whether the MovexxxElement methods have completed successfully.
See Also
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Elements: |
MoveLastKey method, MovePrevKey method, MoveNextKey method, MoveRootKey method, MoveParentKey method, MoveChildKey method |
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Topics: |