Binding to properties of other controls?

[mrlacey]

Is binding to properties of other controls supported by any of the Bind extensions?
I can't get it to work.

Ultimately I also want to be able to create instances of controls where some properties (& commands) are bound to a ViewModel (via the BindingContext) and some properties are bound to properties of other controls on the page.

I've been experimenting with a lot of different things that I thought should/might work but with no success.
Before I spend any more time on this, is it expected to be possible? (I'm probably just doing something silly.)

[brminnick]

Is binding to properties of other controls supported by any of the Bind extensions

Yup! That's known as a View-to-View binding.

Here's an example where I'm binding CollectionView.HeightRequestProperty to SearchBar.HeightProperty:

.Bind(CollectionView.HeightRequestProperty, SearchBar.HeightProperty.PropertyName, source: searchBar, convert: (double searchBarHeight) => this.Height - searchBarHeight)

https://github.com/ChilliCream/workshops/blob/e8c21a2c7b52ddd47ec641484272b42f825bb2f4/crypto-maui/frontend/X-final/Pages/ScreenerPage.cs#L26

[mrlacey]

Thanks. What I was doing was working but I'd actually encountered another issue. (Raising a MAUI bug for that separately.)
Your example also pointed me to the Assign method, which is really useful. I was creating instances as named variables and then adding them to the content of the page. This is much nicer. This is probably something that would benefit from improved documentation.

[CliffAgius]

Closed and answered