培训第五章 数据存储 网络 推送
数据存储
临时数据存储
每一个页面都有一个状态字典
用来存储页面的临时数据
定义在PhoneApplicationPage中
每一个程序都有一个状态字典
存储程序的一些状态,
定义在PhoneApplicationService
持久数据存储
持入数据存储介绍
IsolatedStorageSettings
IsolatedStorageSettings在独立存储中 Dictionary<TKey,TValue>
使用步骤:
1: 获取一个IsolatedStoragedSettings实例
IsolatedStoragedSettings MySetting = IsolatedStorageSettings.ApplicationSettings;
2: MySetting["name"] = this.name.Text;
MySetting.Save();
3: 读取数据
name.Text = MySetting["name"] as string;
age.Text = MySetting["age"] as string;
IsolatedStorageFile
表示包含文件和目录
涉及到的一些其它类
StreamWriter---写入
StreamReader---读取
DataContext(本地数据库)
Windows Phone中使用的数据库为SQL Linq
DataContext代表一个数据库对象
使用LinQ to Sql进行数据的存储和访问
数据库的操作
创建数据库
插入,查询,更新,删除
拷贝工程中的文件至独立存储
其它
网络
推送
培训第八章 依赖属性 数据绑定
依赖属性
依赖属性的引入
依赖属性的定义和使用
附加属性
IS DP
AddOwner
Canvas.Left/Grid.Row等
属性继承
绑定
绑定介绍
含义：一种与数据进行交互的简单方法
涉及到四个内容
绑定源
绑定目标
绑定对象
转换器
数据流向
绑定有Mode属性，它决定了数据的流向
OneTime
OneWay
TwoWay
ElementName和绑定路径
ElementName binding
通过ElementName指定绑定数据
Path Variant
绑定到绑定源的某个属性
Source绑定
DataContext绑定
定义在FrameworkElement
可以动态改变DataContent
绑定转换器
属性改变通知
<!-- LayoutRoot 是包含所有页面内容的根网格 -->
<Grid x:Name="LayoutRoot" Background="Transparent">
<!-- 效果没有显示出来 -->
<!--
<Slider Margin="0,0,0,369"
FontSize="30"
Foreground="Red"
Maximum="100"
Value="30" />
<TextBlock Margin="10,216,-10,324"
FontSize="30"
Text="{Binding ElementName=slider,
Path=Value,
Converter={StaticResource DataConverter1},
ConverterParameter='1'}" />
<TextBlock Margin="10,307,-10,233"
FontSize="30"
Text="{Binding ElementName=slider,
Path=Value,
Converter={StaticResource DataConverter1},
ConverterParameter='2'}" />
-->
<!--
<StackPanel x:Name="StackPanel1">
<TextBlock Text="{Binding Name}" />
<TextBlock Text="{Binding Sex}" />
<TextBlock Text="{Binding Location}" />
</StackPanel>
<Button HorizontalAlignment="Center"
VerticalAlignment="Top"
Click="Button_Click"
Content="Next" />
-->
<!--
<Grid x:Name="ContentPanel"
Grid.Row="1"
Margin="12,0,12,0">
<Grid.RowDefinitions>
<RowDefinition Height="*" />
<RowDefinition Height="*" />
<RowDefinition Height="*" />
</Grid.RowDefinitions>
<Slider x:Name="slider1"
Grid.Row="0"
Maximum="100"
Value="30" />
<TextBlock Grid.Row="1" Text="{Binding ElementName=slider1, Path=Value}" />
<StackPanel Grid.Row="2" Orientation="Horizontal">
<TextBox x:Name="myName"
Width="200"
Text="xxd" />
<TextBlock Text="Binding variant1:" />
<TextBlock Text="{Binding ElementName=myName, Path=Text}" />
</StackPanel>
</Grid>
-->
<!--
<Grid x:Name="ContentPanel"
Grid.Row="0"
Margin="12,0,12,0">
<Grid.RowDefinitions>
<RowDefinition Height="*" />
<RowDefinition Height="*" />
</Grid.RowDefinitions>
<TextBlock x:Name="textBlock1"
Grid.Row="0"
Text="To be BindTarget" />
<StackPanel Grid.Row="1"
VerticalAlignment="Top"
Orientation="Horizontal">
<Button x:Name="button1"
Click="button1_Click"
Content="Bind to Button1"
Tag="tag1" />
<Button x:Name="button2"
Click="button2_Click"
Content="Bind to Button2"
Tag="tag2" />
</StackPanel>
</Grid>
-->
<!--
<Grid x:Name="ContentPanel"
Grid.Row="0"
Margin="12,0,12,0">
<StackPanel>
<TextBlock x:Name="textBlock1"
Opacity="0"
Text="Link To <a href="//Page1.xaml"> Page1 </a>" />
<local:RichTextBlock Foreground="Red" Text="{Binding ElementName=textBlock1, Path=Text}" />
</StackPanel>
</Grid>
-->
<!--
<Grid x:Name="ContentPanel"
Grid.Row="0"
Margin="12,0,12,0">
<StackPanel HorizontalAlignment="Center"
VerticalAlignment="Center"
Orientation="Horizontal">
<TextBlock Text="{Binding RelativeSource={RelativeSource Self}, Path=FontFamily}" />
<TextBlock Text=" - " />
<TextBlock Text="{Binding RelativeSource={RelativeSource Self}, Path=FontSize}" />
<TextBlock Text=" pixels" />
</StackPanel>
</Grid>
-->
<Grid x:Name="ContentPanel"
Grid.Row="0"
Margin="12,0,12,0">
<StackPanel x:Name="stackPanel1">
<TextBlock Text="{Binding Name}" />
<TextBlock Text="{Binding Sex}" />
<TextBlock Text="{Binding Location}" />
<Button Click="Button_Click_1" Content="ChangeLocation" />
</StackPanel>
</Grid>
</Grid>
public partial class MainPage : PhoneApplicationPage
{
private List<Profile> profiles;
private int index;
private Profile profile1;
// 构造函数
public MainPage()
{
InitializeComponent();
// 将 listbox 控件的数据上下文设置为示例数据
//DataContext = App.ViewModel;
// 用于本地化 ApplicationBar 的示例代码
//BuildLocalizedApplicationBar();
//var binding = new System.Windows.Data.Binding() {ElementName = "slider1", Path = new PropertyPath("Value")};
//textBlock1.SetBinding(TextBlock.TextProperty, binding);
//Profile profile1 = new Profile("Xlc","男","北京");
//StackPanel1.DataContext = profile1;
/*profiles = new List<Profile>();
Profile profile0 = new Profile("xlc","男","男");
profiles.Add(profile0);
profiles.Add(new Profile("xlc","男","北京"));
profiles.Add(new Profile("xianglingchuan","女","四川"));
index = 0;
StackPanel1.DataContext = profile0;*/
profile1 = new Profile("Vincent","Male","Beijing");
stackPanel1.DataContext = profile1;
}
private void Button_Click_1(object sender, RoutedEventArgs e)
{
profile1.Location = "Heilongjiang";
profile1.MakeLocationChange();
}
/*private void button1_Click(object sender, RoutedEventArgs e)
{
System.Windows.Data.Binding binding1 = new System.Windows.Data.Binding() { ElementName = "button1", Path = new PropertyPath("Content") };
textBlock1.SetBinding(TextBlock.TextProperty, binding1);
}
private void button2_Click(object sender, RoutedEventArgs e)
{
System.Windows.Data.Binding binding2 = new System.Windows.Data.Binding() { ElementName = "button2", Path = new PropertyPath("Content") };
textBlock1.SetBinding(TextBlock.TextProperty, binding2);
}*/
// 为 ViewModel 项加载数据
protected override void OnNavigatedTo(NavigationEventArgs e)
{
}
/*xprivate void Button_Click(object sender, RoutedEventArgs e)
{
index++;
if (index >= profiles.Count)
index = 0;
StackPanel1.DataContext = profiles[index] as Profile;
}*/
}
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