"boolean to visibility converter - inverted?" Code Answer

as far as i know, you have to write your own implementation for this. here's what i use:

public class booleantovisibilityconverter : ivalueconverter
{
    public object convert(object value, type targettype, object parameter, cultureinfo culture)
    {
        bool boolvalue = (bool)value;
        boolvalue = (parameter != null) ? !boolvalue : boolvalue;
        return boolvalue ? visibility.visible : visibility.collapsed;
    }

    public object convertback(object value, type targettype, object parameter, cultureinfo culture)
    {
        throw new notimplementedexception();
    }
}

and i generally set converterparameter='negate' so it's clear in code what the parameter is doing. not specifying a converterparameter makes the converter behave like the built-in booleantovisibilityconverter. if you want your usage to work, you can, of course, parse the converterparameter using bool.tryparse() and react to it.

By mdexp on July 1 2022