How to Display ObservableCollection in a UserControl

Question

I\'m new to WPF and I\'ve found some similar questions but can\'t quite figure out the last part. I have a ViewModel with an ObservableCollection that contains error messag

Answer 1

Unless you have a great amount of messages a simple converter might be viable:

public class JoinStringsConverter : IValueConverter
{
    public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
    {
        var strings = value as IEnumerable;
        return string.Join(Environment.NewLine, strings);
    }

    public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
    {
        throw new NotSupportedException();
    }
}