Fix binding to Window.

src/Markup/Perspex.Markup.Xaml/PerspexXamlLoader.cs

@@ -12,6 +12,8 @@ using Perspex.Platform;
 namespace Perspex.Markup.Xaml
 {
     using Context;
+    using Controls;
+    using Data;
     using OmniXaml.ObjectAssembler;
 
     /// <summary>
@@ -160,11 +162,20 @@ namespace Perspex.Markup.Xaml
 
         private object Load(Stream stream, object rootInstance)
         {
-            return base.Load(stream, new Settings
+            var result = base.Load(stream, new Settings
             {
                 RootInstance = rootInstance,
                 InstanceLifeCycleListener = s_lifeCycleListener,
             });
+
+            var control = result as IControl;
+
+            if (control != null)
+            {
+                DelayedBinding.ApplyBindings(control);
+            }
+
+            return result;
         }
     }
 }

tests/Perspex.Markup.Xaml.UnitTests/Xaml/BindingTests.cs

@@ -79,5 +79,25 @@ namespace Perspex.Markup.Xaml.UnitTests.Xaml
                 Assert.Same(button, ((NonControl)button.Tag).Control);
             }
         }
+
+        [Fact]
+        public void Binding_To_Window_Works()
+        {
+            using (UnitTestApplication.Start(TestServices.StyledWindow))
+            {
+                var xaml = @"
+<Window xmlns='https://github.com/perspex'
+             xmlns:x='http://schemas.microsoft.com/winfx/2006/xaml'
+             Title='{Binding Foo}'>
+</Window>";
+                var loader = new PerspexXamlLoader();
+                var window = (Window)loader.Load(xaml);
+
+                window.DataContext = new { Foo = "foo" };
+                window.ApplyTemplate();
+
+                Assert.Equal("foo", window.Title);
+            }
+        }
     }
 }