Convert between String and Boolean? in a bad way.

BooleanStringConverter.cs

	/// <summary>
	/// Convert between Boolean? and String
	/// </summary>
	public class BooleanToStringConverter : IValueConverter
	{
		public object Convert( object value, Type targetType, object parameter, CultureInfo culture)
		{
			// bool? to string.
			bool castValue = (value as bool?) ?? false;

			return castValue ? "True" : "False";
		}

		public object ConvertBack( object value, Type targetType, object parameter, CultureInfo culture)
		{
			string castValue = (value as String) ?? "False";

			bool outVal = false;
			Boolean.TryParse(castValue, out outVal);

			return outVal as bool?;
		}
	}