Bug 59391 - Using an Entry with HorizontalOptions = CenterAndExpand, the Entry does not resize as content grows
Summary: Using an Entry with HorizontalOptions = CenterAndExpand, the Entry does not r...
Alias: None
Product: Forms
Classification: Xamarin
Component: Forms ()
Version: 2.4.0
Hardware: PC Windows
: Normal normal
Target Milestone: ---
Assignee: Bugzilla
Depends on:
Reported: 2017-09-11 14:20 UTC by John Hardman
Modified: 2017-09-11 16:10 UTC (History)
2 users (show)

Tags: all, entry, binding, HorizontalOptions, ac
Is this bug a regression?: ---
Last known good build:

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Description John Hardman 2017-09-11 14:20:46 UTC
On Android, iOS and UWP, using XF, an Entry with HorizontalOptions = LayoutOptions.CenterAndExpand does not resize as the text in the Entry grows.

To reproduce, add the code below to a project and push a new instance of EntryNotResizingBugPageView onto the navigation stack. Press the button to extend the text, which I would expect to grow the Entry. It doesn't.

Possibly related to confirmed bug 28618

using System.ComponentModel;

using Xamarin.Forms;

namespace ViewsUsingXamarinForms
	public class EntryNotResizingBugViewModel : INotifyPropertyChanged
		private string _textValue = "0";
		public string TextValue
			get => _textValue;
				_textValue = value;

		public event PropertyChangedEventHandler PropertyChanged = delegate { }; // TODO - investigate warning here re hiding base class event

		internal void SetPropertyChanged(string propertyName)
				this, new PropertyChangedEventArgs(propertyName));

	public class EntryNotResizingBugPageView : ContentPage
		public EntryNotResizingBugPageView()
			EntryNotResizingBugViewModel viewModel = new EntryNotResizingBugViewModel();

			this.BindingContext = viewModel;

			Entry entry = new Entry
				HorizontalOptions = LayoutOptions.CenterAndExpand,
				BackgroundColor = Color.White,
				TextColor = Color.Black,

				new Binding(

			this.Content = new StackLayout
				Margin = new Thickness(20, 0, 20, 0),
				HorizontalOptions = LayoutOptions.FillAndExpand,
				VerticalOptions = LayoutOptions.Start,
				Children =
					new Button()
						HorizontalOptions = LayoutOptions.FillAndExpand,
						Text = "Press to extend entry text",
						BackgroundColor = Color.White,
						TextColor = Color.Black,
						Command = new Command(() =>
							viewModel.TextValue = viewModel.TextValue + "000";

	} // public class EntryNotResizingBugPageView : ContentPage

} // namespace ViewsUsingXamarinForms

// eof
Comment 1 Paul DiPietro [MSFT] 2017-09-11 16:10:22 UTC
Updating to reflect that the issue occurs on 2.4.0-pre2 using the above code.