public object Convert(object[] values, Type targetType, object parameter, CultureInfo culture)
{
var parameterString = parameter.ToString();
bool isTrue = false;
if (parameterString.Contains("?"))
{
var compareValue = parameterString.Substring(0, parameterString.IndexOf("?", StringComparison.Ordinal));
isTrue = values.All(i => i?.ToString() == compareValue);
}
else
{
isTrue = values.Skip(1).All(i => i?.ToString() == values[0]?.ToString());
}
return(ConverterHelper.Result <bool?>(isTrue, i => i, targetType, parameter));
}
