我是WP开发的新手，我遇到了一个问题，我无法自行修复。 我正在尝试设置设置页面。我从msdn文章中复制了大部分内容：
<phone:PhoneApplicationPage.Resources>
<local:Page1 x:Key="appSettings" />
</phone:PhoneApplicationPage.Resources>
它表现完全随机。大多数时候VS只是崩溃了。 我确信这是因为VS尝试连接到IsolatedStorage。但是当我尝试访问该页面时，Emulator只关闭了应用程序。
设置页面的完整代码（第1页）：
的Page1.xaml：
<phone:PhoneApplicationPage
x:Class="MyApp.Page1"
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"
xmlns:local="clr-namespace:MyApp"
FontFamily="{StaticResource PhoneFontFamilyNormal}"
FontSize="{StaticResource PhoneFontSizeNormal}"
Foreground="{StaticResource PhoneForegroundBrush}"
SupportedOrientations="Portrait" Orientation="Portrait"
mc:Ignorable="d" d:DesignHeight="768" d:DesignWidth="480"
shell:SystemTray.IsVisible="True">
<phone:PhoneApplicationPage.Resources>
<local:Page1 x:Key="appSettings" />
</phone:PhoneApplicationPage.Resources>
<!--LayoutRoot is the root grid where all page content is placed-->
<Grid x:Name="LayoutRoot" Background="Transparent">
<Grid.RowDefinitions>
<RowDefinition Height="Auto"/>
<RowDefinition Height="*"/>
</Grid.RowDefinitions>
<!--TitlePanel contains the name of the application and page title-->
<StackPanel x:Name="TitlePanel" Grid.Row="0" Margin="12,17,0,28">
<TextBlock x:Name="ApplicationTitle" Text="MYAPP" Style="{StaticResource PhoneTextNormalStyle}"/>
<TextBlock x:Name="PageTitle" Text="settings" Margin="9,-7,0,0" Style="{StaticResource PhoneTextTitle1Style}"/>
</StackPanel>
<Grid x:Name="ContentGrid" Grid.Row="1">
<CheckBox Content="CheckBox Setting" Height="Auto" HorizontalAlignment="Left" Margin="60,20,0,0" Name="checkBoxSetting" VerticalAlignment="Top"
IsChecked="{Binding Source={StaticResource appSettings}, Path=CheckBoxSetting, Mode=TwoWay}" />
<ListBox Height="140" HorizontalAlignment="Left" Margin="70,150,0,0" Name="listBoxSetting"
VerticalAlignment="Top" Width="360" SelectedIndex="{Binding Source={StaticResource appSettings}, Path=ListBoxSetting, Mode=TwoWay}">
<ListBoxItem Content="Times New Roman" FontSize="24" FontFamily="Times New Roman" />
<ListBoxItem Content="Arial" FontSize="24" FontFamily="Arial" />
<ListBoxItem Content="Comic Sans MS" FontSize="24" FontFamily="Comic Sans MS" />
</ListBox>
<RadioButton Content="Choice One" Height="Auto" HorizontalAlignment="Left" Margin="60,0,0,235" Name="radioButton1" VerticalAlignment="Bottom" GroupName="GroupOne" IsChecked="{Binding Source={StaticResource appSettings}, Path=RadioButton1Setting, Mode=TwoWay}" />
<RadioButton Content="Choice Two" Height="Auto" HorizontalAlignment="Left" Margin="60,350,0,0" Name="radioButton2" VerticalAlignment="Top" GroupName="GroupOne" IsChecked="{Binding Source={StaticResource appSettings}, Path=RadioButton2Setting, Mode=TwoWay}"/>
<RadioButton Content="Choice Three" Height="Auto" HorizontalAlignment="Left" Margin="60,400,0,0" Name="radioButton3" VerticalAlignment="Top" GroupName="GroupOne" IsChecked="{Binding Source={StaticResource appSettings}, Path=RadioButton3Setting, Mode=TwoWay}"/>
</Grid>
</Grid>
</phone:PhoneApplicationPage>
和Page1.xaml.cs：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Net;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Animation;
using System.Windows.Shapes;
using Microsoft.Phone.Controls;
using System.IO.IsolatedStorage;
using System.Diagnostics;
namespace Schedule
{
public partial class Page1 : PhoneApplicationPage
{
// Our settings
IsolatedStorageSettings settings;
// The key names of our settings
const string CheckBoxSettingKeyName = "CheckBoxSetting";
const string ListBoxSettingKeyName = "ListBoxSetting";
const string RadioButton1SettingKeyName = "RadioButton1Setting";
const string RadioButton2SettingKeyName = "RadioButton2Setting";
const string RadioButton3SettingKeyName = "RadioButton3Setting";
const string UsernameSettingKeyName = "UsernameSetting";
const string PasswordSettingKeyName = "PasswordSetting";
// The default value of our settings
const bool CheckBoxSettingDefault = true;
const int ListBoxSettingDefault = 0;
const bool RadioButton1SettingDefault = true;
const bool RadioButton2SettingDefault = false;
const bool RadioButton3SettingDefault = false;
const string UsernameSettingDefault = "";
const string PasswordSettingDefault = "";
/// <summary>
/// Constructor that gets the application settings.
/// </summary>
public Page1()
{
InitializeComponent();
// Get the settings for this application.
try
{
settings = IsolatedStorageSettings.ApplicationSettings;
}
catch(System.IO.IsolatedStorage.IsolatedStorageException e)
{
MessageBox.Show(e.ToString());
}
}
/// <summary>
/// Update a setting value for our application. If the setting does not
/// exist, then add the setting.
/// </summary>
/// <param name="Key"></param>
/// <param name="value"></param>
/// <returns></returns>
public bool AddOrUpdateValue(string Key, Object value)
{
bool valueChanged = false;
// If the key exists
if (settings.Contains(Key))
{
// If the value has changed
if (settings[Key] != value)
{
// Store the new value
settings[Key] = value;
valueChanged = true;
}
}
// Otherwise create the key.
else
{
settings.Add(Key, value);
valueChanged = true;
}
return valueChanged;
}
/// <summary>
/// Get the current value of the setting, or if it is not found, set the
/// setting to the default setting.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="Key"></param>
/// <param name="defaultValue"></param>
/// <returns></returns>
public T GetValueOrDefault<T>(string Key, T defaultValue)
{
T value;
// If the key exists, retrieve the value.
if (settings.Contains(Key))
{
value = (T)settings[Key];
}
// Otherwise, use the default value.
else
{
value = defaultValue;
}
return value;
}
/// <summary>
/// Save the settings.
/// </summary>
public void Save()
{
settings.Save();
}
/// <summary>
/// Property to get and set a CheckBox Setting Key.
/// </summary>
public bool CheckBoxSetting
{
get
{
return GetValueOrDefault<bool>(CheckBoxSettingKeyName, CheckBoxSettingDefault);
}
set
{
if (AddOrUpdateValue(CheckBoxSettingKeyName, value))
{
Save();
}
}
}
/// <summary>
/// Property to get and set a ListBox Setting Key.
/// </summary>
public int ListBoxSetting
{
get
{
return GetValueOrDefault<int>(ListBoxSettingKeyName, ListBoxSettingDefault);
}
set
{
if (AddOrUpdateValue(ListBoxSettingKeyName, value))
{
Save();
}
}
}
/// <summary>
/// Property to get and set a RadioButton Setting Key.
/// </summary>
public bool RadioButton1Setting
{
get
{
return GetValueOrDefault<bool>(RadioButton1SettingKeyName, RadioButton1SettingDefault);
}
set
{
if (AddOrUpdateValue(RadioButton1SettingKeyName, value))
{
Save();
}
}
}
/// <summary>
/// Property to get and set a RadioButton Setting Key.
/// </summary>
public bool RadioButton2Setting
{
get
{
return GetValueOrDefault<bool>(RadioButton2SettingKeyName, RadioButton2SettingDefault);
}
set
{
if (AddOrUpdateValue(RadioButton2SettingKeyName, value))
{
Save();
}
}
}
/// <summary>
/// Property to get and set a RadioButton Setting Key.
/// </summary>
public bool RadioButton3Setting
{
get
{
return GetValueOrDefault<bool>(RadioButton3SettingKeyName, RadioButton3SettingDefault);
}
set
{
if (AddOrUpdateValue(RadioButton3SettingKeyName, value))
{
Save();
}
}
}
/// <summary>
/// Property to get and set a Username Setting Key.
/// </summary>
public string UsernameSetting
{
get
{
return GetValueOrDefault<string>(UsernameSettingKeyName, UsernameSettingDefault);
}
set
{
if (AddOrUpdateValue(UsernameSettingKeyName, value))
{
Save();
}
}
}
/// <summary>
/// Property to get and set a Password Setting Key.
/// </summary>
public string PasswordSetting
{
get
{
return GetValueOrDefault<string>(PasswordSettingKeyName, PasswordSettingDefault);
}
set
{
if (AddOrUpdateValue(PasswordSettingKeyName, value))
{
Save();
}
}
}
}
}
我会对任何帮助感到高兴。 感谢。
答案 0 :(得分：1)
而不是local:Page1，您应该在MSDN示例中放置一个单独的类（名为AppSettings）。
在您的情况下，您已将Page1的实例放在... Page1的XAML中！因此，当运行时创建Page1时，它会解析XAML，找到这行代码，创建新的Page1实例，然后创建一个Page1实例，依此类推......