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using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Xamarin.Forms.CustomAttributes;
using Xamarin.Forms.Internals;
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;
}
}
}
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