[C#/WPF] NULL to Visibility Converter

NULL 일 경우 Visibility 설정하는 Converter public class NullToVisibilityConverter : IValueConverter { public object Convert(object value, Type targetType, object parameter, CultureInfo culture) { Visibility returnValue = Visibility.Visible; bool isEmpty = false; if ((value ?? "").Equals("")) { isEmpty = true; } if (isEmpty == true) { string param = parameter == null ?

"" : parameter.ToString(); switch.....