How to use layouts?

[stefano.menci]

@danbolinson

We use models, not dictionaries, and so the suppression of key errors before item is fully set doesn’t work when we’re using attributes.

The correct approach to data binding in relation to the chronological order of what’s executed when has already been discussed in other answers. I don’t understand what you mean by “models”, but if it helps, you can have a look at this post to see how I use my own classes rather than dictionaries, and I get them to play nice with databinding by deriving them from the class AttributeToKey.