1 files changed, 77 insertions, 0 deletions
diff --git a/Xamarin.Forms.Controls.Issues/Xamarin.Forms.Controls.Issues.Shared/Issue1685.cs b/Xamarin.Forms.Controls.Issues/Xamarin.Forms.Controls.Issues.Shared/Issue1685.cs
new file mode 100644
index 00000000..1f9cbcf2
--- /dev/null
+++ b/Xamarin.Forms.Controls.Issues/Xamarin.Forms.Controls.Issues.Shared/Issue1685.cs
@@ -0,0 +1,77 @@
+using System;
+using System.Collections.Generic;
+using System.ComponentModel;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+using Xamarin.Forms.CustomAttributes;
+
+namespace Xamarin.Forms.Controls
+{
+	[Preserve (AllMembers=true)]
+	[Issue (IssueTracker.Github, 1685, "Entry clears when upadting text from native with one-way binding", PlatformAffected.Android | PlatformAffected.iOS | PlatformAffected.WinPhone, NavigationBehavior.PushModalAsync)]
+	public class Issue1685 : ContentPage
+	{
+		class Test : INotifyPropertyChanged
+		{
+			public event PropertyChangedEventHandler PropertyChanged;
+
+			decimal _entryValue = decimal.Zero;
+			public decimal EntryValue
+			{
+				get
+				{
+					return _entryValue;
+				}
+				set
+				{
+					_entryValue = value;
+					OnPropertyChanged("EntryValue");
+				}
+			}
+
+			void OnPropertyChanged(string caller) {
+				var handler = PropertyChanged;
+				if (handler != null) 
+				{
+					handler(this, new PropertyChangedEventArgs(caller));
+				}
+			}
+		}
+
+		public Issue1685()
+		{
+			Title = "EntryBindingBug";
+
+			BindingContext = new Test();
+
+			var entry = new Entry() {
+				Placeholder = "Entry"
+			};
+			entry.SetBinding(Entry.TextProperty, "EntryValue", BindingMode.OneWay);
+
+			var button = new Button() {
+				Text = "Click me"
+			};
+
+			button.Clicked += (sender, e) => 
+			{
+				var context = BindingContext as Test;
+				context.EntryValue = context.EntryValue + 1;
+			};
+
+			var root = new StackLayout() {
+				VerticalOptions = LayoutOptions.FillAndExpand,
+				HorizontalOptions = LayoutOptions.FillAndExpand,
+				Children = {
+					entry,
+					button
+				}
+			};
+
+			Content = root;
+
+		}
+	}
+}