`@bind` does not check if the parameter exists

[MarvinKlein1508]

@davidwengier

Another strange thing in razor. You can bind to literally anything. Visual Studio is not checking whether the bound value is an actual parameter of the component.

See:

This has driven me crazy in a recent migration because a component library has changed it's parameter name from @bind-SelectedOptions to @bind-SelectedItems the code will compile fine but it'S strange that you can bind to something which doesn't exist.

[davidwengier]

This is essentially #7660 but for directive attributes (though that might be covered by that issue too). Worth keeping open separately though, as it feels like this one is less likely to cause clashes with legitimate attributes.

[MarvinKlein1508]

@davidwengier it would help a lot if non existent @bind statements aren't highlighted in razor syntax