c# - Is there a way that I could assign a value to a variable at the same time as checking if it's null or not?

Question

I currently have this code:

    private static void IsEntryWidthChanged(BindableObject bindable, object oldValue, object newValue)
    {
        if ((bindable as SingleEntryGrid)._column3 != null)
            (bindable as SingleEntryGrid)._column3.Width = (double)newValue;
    }

Is here a way that I could assign (bindable as SingleEntryGrid) to a variable while at the same time checking it is not null and then use that for the next line such that the next line became:

    singleEntryGrid._column3.Width = (double)newValue;

Answer 1

I suppose you could use ??= to supply a new object if the existing is null:

((bindable as SingleEntryGrid)._column3 ??= new ColumnThing()).Width = newValue;

Replace ColumnThing with the type _column3 has. You can set more properties with { X = Y } initializer after the ()