QuickGrid - Expose way to Hide Column Options

[anemitoff]

Is there an existing issue for this?

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Is your feature request related to a problem? Please describe the problem.

I am trying to hide the currently displayed column options when the user presses ESC but there is no function available to do so.

Describe the solution you'd like

The QuickGrid<T>::ShowColumnOptionsAsync(ColumnBase<T> column) should accept a NULLABLE value. It should be defined as QuickGrid<T>::ShowColumnOptionsAsync(ColumnBase<T>? column)

No code change would be required, simply a change to the signature of the function.

Alternatively a HideCurrentColumnOptions() method could be exposed.

Additional context

No response

[matthetherington]

You can cast null to a ColumnBase<> and call ShowColumnOptionsAsync with it, this works but performs some unnecessary interop under the hood:

await _quickGrid.ShowColumnOptionsAsync((ColumnBase<Foo>)null!);

There's actually a CloseColumnOptions method on QuickGrid, but it's private. I've PR'd a change to make this public here: #57904