How to create collapsable/expandable report

DrillDown behavior can be implemented with help of Hyperlinks.

The idea is the following:

  1. There are TextBoxes with plus/minus Button. They have Hyperlink property which identifies which group to hide/show.
  2. There is a static dictionary on the form which stores which group is shown or collapsed.
  3. There is a hyperlink handler which expands/collapses group in the dictionary (sets true or false) and calls rendering
  4. Visibility of the groups is handled in the scripts and retrieves values from the dictionary mentioned above.

You can find sample here:
http://perpetuumsoft.com/Support/DrillDown.SSR/DrillDown.zip

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