Why does a Silverlight TextBox use \r for a newline instead of Environment.Newline (\r\n)?

Question

In silverlight, if a TextBox AcceptsReturn, all newlines are \\r, even though Environment.Newline is \\r\\n. Why is this? (WPF has \\r\\n as newline for textbox)

Answer 1

I agree with ertan's answer. I have ran into a scenario in which this is inconveniencing.

We have an application that collects string data from a user through a Silverlight Textbox and stores that data in a SQL Server database, which is a very common. A problem arises when other components of the application use that stored string data expecting line breaks to be represented by "\r\n". One example of such a component is Telerik's reporting solution: See Line break issue in multi line text boxes.

I overcame this problem by using this value converter:

public class LineBreakCorrectionConverter : IValueConverter
{
    private const string CR = "\r";
    private const string CRLF = "\r\n";

    public object Convert(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
    {
        string text = value as string;

        if (text == null)
            return null;

        return text.Replace(CRLF, CR);
    }

    public object ConvertBack(object value, Type targetType, object parameter, System.Globalization.CultureInfo culture)
    {
        string text = value as string;

        if (text == null)
            return null;

        return text.Replace(CR, CRLF);
    }
}