according to this Thread: http://social.msdn.microsoft.com/Forums/vstudio/en-US/d566e2e5-3782-4e2b-be3b-85228f41dfc3/add-a-tree-path-field-in-work-item it is not possible to create a TreePath or AreaPath for a custom-field.
I kinda can't believe nobody is running into extreme problems without this crucial controls. Since the last answer in this Thread (and the others about this I found) is from earlier last year, was there anything changed about this control?
Has anyone found a solution about this? I tried to google about creating own custom controls, but I think this is not possible. Is there any workarround to create a easy tree-structure in a control?
Thanks and greetings
Matthias
Read more carefully. You cannot have fields with TreePath data type, but you can create custom controls for other data types.
In other words, you can create custom controls that display hierarchical information as long as you are able to represent this in an existing data type, in practice the String type.
Examples of custom controls at https://witcustomcontrols.codeplex.com/.