Problem descriprion:

We are trying to create an application in which we have two TreeView
controls connected together via a custom control that renders lines between
TreeViewItems (we draw lines between the source and destination TreeView).
The connections are rendered properly but we are facing a major performance
issue. It takes close to 1 second to refresh the entire page. We have
profiled the application using DotTrace and we realized that the most
expensive function was ItemsControl.ContainerFromItem.



Basically, each time the tree is rendered, we are going through our
connection list(around 8000 items) and for each connection we try to get the
container for the source and the destination using the function
ContainerFromItem defined in the class ItemsControl.

We would like to know if we are using a good approach to connect two
TreeView controls together or if there is a faster way to actually retrieve
each items container's bounding box.



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"Paul" <Paul (AT) discussions (DOT) microsoft.com> wrote