I was recently working on a WPF project, and it was all about data editing and synchronization. Data was hierarchically organized, and I had to provide a lot of different views on isolated and merged data sources based on a variety of external factors. First of all: I 'love' data binding in WPF — it just makes a lot of things so easy! So in order to display nested data on a TreeView control, I started with a hierarchical data template. However — I soon reached limits that proved hard to get around. While data binding had served me very well so far, I just needed more control from code when it came to that tree.
