* Introduced TreeNodeExpandCollapseState in order to have a means to save the expand/collapse state of tree nodes and being able to restore that state back after a treeview refresh. * Drag&Dropping piping calculation and calculation group nodes now have their expanded/collapsed state retained after the action. * Added GetHashCode to PipingContext, as it's overriding Equals Related to Issue [
WTI-174]
git-svn-id:
https://repos.deltares.nl/repos/WettelijkToetsInstrumentarium/trunk@1216 5a3db67b-de53-47b5-99c8-a1c30a6650e2
Former-commit-id: 1a665f3d971c16e14754e5e1f180e991ba8058a2