1 files changed, 17 insertions, 0 deletions
diff --git a/Xamarin.Forms.Core/BindingBaseExtensions.cs b/Xamarin.Forms.Core/BindingBaseExtensions.cs
new file mode 100644
index 00000000..a52c5cb1
--- /dev/null
+++ b/Xamarin.Forms.Core/BindingBaseExtensions.cs
@@ -0,0 +1,17 @@
+using System;
+
+namespace Xamarin.Forms
+{
+	internal static class BindingBaseExtensions
+	{
+		internal static BindingMode GetRealizedMode(this BindingBase self, BindableProperty property)
+		{
+			if (self == null)
+				throw new ArgumentNullException("self");
+			if (property == null)
+				throw new ArgumentNullException("property");
+
+			return self.Mode != BindingMode.Default ? self.Mode : property.DefaultBindingMode;
+		}
+	}
+}
+\ No newline at end of file