MultiBinding?

[kazo0]

Tracking thoughts on feasibility/usefulness of having a MultiBinding experience.

Similar to MAUI having MultiBinding and IMultiValueConverter: https://learn.microsoft.com/en-us/dotnet/maui/fundamentals/data-binding/multibinding?view=net-maui-9.0

[Xiaoy312]

neither are supported by winui...
the recommended way was to use x:Bind with function:

Starting in Windows 10, version 1607, {x:Bind} supports using a function as the leaf step of the binding path. This enables:

• A simpler way to achieve value conversion
• A way for bindings to depend on more than one parameter

we can probably brute force one using custom markup extensions, using the same approach taking by responsive-binding. one problem with this approach is that, we must provide an initial value.