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using System;
using System.Collections.Generic;
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, 1723, "Picker's Items.Clear cause exception", PlatformAffected.WinPhone, NavigationBehavior.PushModalAsync)]
public class Issue1723
: ContentPage
{
Picker _picker = null;
public Issue1723()
{
StackLayout layout = new StackLayout();
Content = layout;
_picker = new Picker();
layout.Children.Add(_picker);
Button button = new Button();
button.Clicked += button_Clicked;
button.Text = "prepare magic";
layout.Children.Add(button);
}
void button_Clicked(object sender, EventArgs e)
{
Random r = new Random();
_picker.Items.Clear();
for (int j = 0; j < r.Next(10, 30); j++)
{
StringBuilder sb = new StringBuilder();
for (int k = 10; k < r.Next(15, 35); k++)
{
sb.Append((char)r.Next(65, 90));
}
_picker.Items.Add(sb.ToString());
}
_picker.SelectedIndex = r.Next(0, _picker.Items.Count);
Button button = (Button)sender;
button.Text = "crash the magic";
}
}
}
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