MoveDown Method

Description:

Moves the Current Data Element down one level. This is only applicable if the Current Data Element is positioned at an SQ Data Element or at an Item Data Element.

If the Current Data Element is positioned at an SQ Data Element, the Current Data Element descends to the first Item in the sequence. If at an Item, the new Current DE becomes the first DE within the Item. Only one level is descended per call.

If the Current DE does not point to an SQ or Item DE, no action is taken.

If this method is successful the CurrentLevel increments by one. Zero refers to the top level. As the number gets larger the Data Element is deeper into the hierarchy. Data Elements (as well as SQs and Item Delimiters) are always stored in odd-numbered levels; even-numbered levels contain Items and SQ Delimiters.

Syntax:

      MoveDown()

Return Value:

N/A

Bits Per Pixel:

N/A

Sample:

Med