windows-phone-7 – WP7的老化测试

> app崩溃,没有异常被抛出
>未处理的异常：{“0xffffffff”}(是的,消息是“0xffffffff”.并且Stacktrace为空)
>一旦我获得DateTimeOffset.Now属性(！)时抛出一个异常
> UI线程冻结,无法终止应用程序,不得不重启设备

所以在这一点上我认为WP7真的不稳定或我的设备硬件有问题.

WP7是否存在老化测试？像Memtest86,Prime和其他桌面工具一样？

编辑：这是导致问题的代码：

public partial class MainPage : PhoneApplicationPage
{
    private Accelerometer _accelerometer;
    private GeoCoordinateWatcher _gps;

    public MainPage()
    {
        InitializeComponent();

        _accelerometer = new Accelerometer();
        _accelerometer.ReadingChanged += new EventHandler<AccelerometerReadingEventArgs>(_accelerometer_ReadingChanged);
        _accelerometer.Start();

        _gps = new GeoCoordinateWatcher(GeoPositionAccuracy.High);
        _gps.PositionChanged += new EventHandler<GeoPositionChangedEventArgs<GeoCoordinate>>(_gps_PositionChanged);
        _gps.Start();
    }

    void _gps_PositionChanged(object sender,GeoPositionChangedEventArgs<GeoCoordinate> e)
    {
        Dispatcher.BeginInvoke(() =>
        {
            TBLocation.Text = e.Position.Location.ToString();
        });
    }

    void _accelerometer_ReadingChanged(object sender,AccelerometerReadingEventArgs e)
    {
        Dispatcher.BeginInvoke(() =>
        {
            TBAccelX.Text = string.Format("X: {0:F2} g",e.X);
            TBAccelY.Text = string.Format("Y: {0:F2} g",e.Y);
        });
    }
}

<phone:PhoneApplicationPage 
    x:Class="AccelerometerTest2.MainPage"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:phone="clr-namespace:Microsoft.Phone.Controls;assembly=Microsoft.Phone"
    xmlns:shell="clr-namespace:Microsoft.Phone.Shell;assembly=Microsoft.Phone"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    mc:Ignorable="d" d:DesignWidth="480" d:DesignHeight="768"
    FontFamily="{StaticResource PhoneFontFamilyNormal}"
    FontSize="{StaticResource PhoneFontSizeNormal}"
    Foreground="{StaticResource PhoneForegroundBrush}"
    SupportedOrientations="Portrait" Orientation="Portrait"
    shell:SystemTray.IsVisible="True">

    <StackPanel>
        <TextBlock Name="TBAccelX"/>
        <TextBlock Name="TBAccelY"/>
        <TextBlock Name="TBLocation"/>
    </StackPanel>

</phone:PhoneApplicationPage>

编辑：因为我怀疑手机有问题.该应用程序已在另一台设备上正常运行了5个小时.