1 files changed, 32 insertions, 0 deletions
diff --git a/Xamarin.Forms.Platform.WinRT/HeightConverter.cs b/Xamarin.Forms.Platform.WinRT/HeightConverter.cs
new file mode 100644
index 00000000..8ae73795
--- /dev/null
+++ b/Xamarin.Forms.Platform.WinRT/HeightConverter.cs
@@ -0,0 +1,32 @@
+using System;
+
+#if WINDOWS_UWP
+
+namespace Xamarin.Forms.Platform.UWP
+#else
+
+namespace Xamarin.Forms.Platform.WinRT
+#endif
+{
+	public sealed class HeightConverter : Windows.UI.Xaml.Data.IValueConverter
+	{
+		public object Convert(object value, Type targetType, object parameter, string language)
+		{
+			double def;
+
+			var ps = parameter as string;
+			if (string.IsNullOrWhiteSpace(ps) || !double.TryParse(ps, out def))
+			{
+				def = double.NaN;
+			}
+
+			var val = (double)value;
+			return val > 0 ? val : def;
+		}
+
+		public object ConvertBack(object value, Type targetType, object parameter, string language)
+		{
+			throw new NotImplementedException();
+		}
+	}
+}
+\ No newline at end of file