Windows Phone 本地数据库的操作
App.xaml
#region 创建数据库
using (MyDataContext dc = new MyDataContext())
{
if (dc.DatabaseExists() == false)
{
dc.CreateDatabase();
}
}
#endregion
MainPage.xaml
<phone:PhoneApplicationPage x:Class="LocalDataBase.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="696" FontFamily="{StaticResource PhoneFontFamilyNormal}" FontSize="{StaticResource PhoneFontSizeNormal}" Foreground="{StaticResource PhoneForegroundBrush}" SupportedOrientations="Portrait" Orientation="Portrait" shell:SystemTray.IsVisible="True"> <!--LayoutRoot 是包含所有页面内容的根网格--> <Grid x:Name="LayoutRoot" Background="Transparent"> <Grid.RowDefinitions> <RowDefinition Height="Auto"/> <RowDefinition Height="*"/> </Grid.RowDefinitions> <!--TitlePanel 包含应用程序的名称和页标题--> <StackPanel x:Name="TitlePanel" Grid.Row="0" Margin="12,17,0,28"> <TextBlock x:Name="ApplicationTitle" Text="我的应用程序" Style="{StaticResource PhoneTextNormalStyle}"/> <TextBlock x:Name="PageTitle" Text="学员列表" Margin="9,-7,0,0" Style="{StaticResource PhoneTextTitle1Style}"/> </StackPanel> <!--ContentPanel - 在此处放置其他内容--> <Grid x:Name="ContentPanel" Grid.Row="1" Margin="12,0,12,0"> <ListBox Name="stuList" HorizontalContentAlignment="Center"> <ListBox.ItemTemplate> <DataTemplate> <Grid Margin="2,10,2,2"> <Grid.RowDefinitions> <RowDefinition Height="auto"/> <RowDefinition Height="auto"/> <RowDefinition Height="auto"/> </Grid.RowDefinitions> <Grid.ColumnDefinitions> <ColumnDefinition Width="Auto" /> <ColumnDefinition /> <ColumnDefinition Width="Auto" /> </Grid.ColumnDefinitions> <TextBlock Grid.Column="0" Grid.Row="0" Text="学号："/> <TextBlock Grid.Column="0" Grid.Row="1" Text="姓名："/> <TextBlock Grid.Column="0" Grid.Row="2" Text="电邮："/> <TextBlock Grid.Column="1" Grid.Row="0" Text="{Binding StuNo}"/> <TextBlock Grid.Column="1" Grid.Row="1" Text="{Binding Name}"/> <TextBlock Grid.Column="1" Grid.Row="2" Text="{Binding Email}"/> <StackPanel Orientation="Horizontal" Grid.Column="2" Grid.Row="1" Grid.RowSpan="2"> <Button BorderThickness="0" Tag="{Binding StuNo}" Click="OnDataEdit" Margin="-5"> <Button.Content> <Image Stretch="Uniform" Source="/Images/edit.png"/> </Button.Content> </Button> <Button Tag="{Binding StuNo}" Click="OnDataDelete" BorderThickness="0" Margin="-5"> <Button.Content> <Image Stretch="Uniform" Source="/Images/deleted.png"/> </Button.Content> </Button> </StackPanel> </Grid> </DataTemplate> </ListBox.ItemTemplate> <ListBox.ItemContainerStyle> <Style TargetType="ListBoxItem"> <Setter Property="HorizontalContentAlignment" Value="Stretch"/> </Style> </ListBox.ItemContainerStyle> </ListBox> </Grid> </Grid> <phone:PhoneApplicationPage.ApplicationBar> <shell:ApplicationBar> <shell:ApplicationBarIconButton Text="刷新" IconUri="appbar.refresh.rest.png" Click="onRefresh"/> <shell:ApplicationBarIconButton Text="新增" IconUri="appbar.add.rest.png" Click="onNew"/> </shell:ApplicationBar> </phone:PhoneApplicationPage.ApplicationBar> </phone:PhoneApplicationPage>
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; namespace LocalDataBase { public partial class MainPage : PhoneApplicationPage { // 构造函数 public MainPage() { InitializeComponent(); } // 编辑 private void OnDataEdit(object sender, RoutedEventArgs e) { Button btn = e.OriginalSource as Button; if (btn != null) { string no = btn.Tag as string; NavigationService.Navigate(new Uri("/EditPage.xaml?sno=" + no, UriKind.Relative)); } } // 删除数据 private void OnDataDelete(object sender, RoutedEventArgs e) { Button btn = e.OriginalSource as Button; if (btn != null) { string sNo = btn.Tag.ToString(); using (MyDataContext dc = new MyDataContext()) { Students stu = dc.Students.FirstOrDefault(s => s.StuNo == sNo); if (stu != null) { dc.Students.DeleteOnSubmit(stu); dc.SubmitChanges(); BindList(); } } } } private void onRefresh(object sender, EventArgs e) { BindList(); } // 新增 private void onNew(object sender, EventArgs e) { NavigationService.Navigate(new Uri("/AddPage.xaml", UriKind.Relative)); } /// <summary> /// 把数据绑定到ListBox /// </summary> private void BindList() { using (MyDataContext dc = new MyDataContext()) { var res = from s in dc.Students select s; this.stuList.ItemsSource = res.ToList(); } } protected override void OnNavigatedTo(System.Windows.Navigation.NavigationEventArgs e) { base.OnNavigatedTo(e); BindList(); } } }
AddPage.xaml
<phone:PhoneApplicationPage x:Class="LocalDataBase.AddPage" 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" FontFamily="{StaticResource PhoneFontFamilyNormal}" FontSize="{StaticResource PhoneFontSizeNormal}" Foreground="{StaticResource PhoneForegroundBrush}" SupportedOrientations="Portrait" Orientation="Portrait" mc:Ignorable="d" d:DesignHeight="696" d:DesignWidth="480" shell:SystemTray.IsVisible="True"> <!--LayoutRoot 是包含所有页面内容的根网格--> <Grid x:Name="LayoutRoot" Background="Transparent"> <Grid.RowDefinitions> <RowDefinition Height="Auto"/> <RowDefinition Height="*"/> </Grid.RowDefinitions> <!--TitlePanel 包含应用程序的名称和页标题--> <StackPanel x:Name="TitlePanel" Grid.Row="0" Margin="12,17,0,28"> <TextBlock x:Name="ApplicationTitle" Text="我的应用程序" Style="{StaticResource PhoneTextNormalStyle}"/> <TextBlock x:Name="PageTitle" Text="新增记录" Margin="9,-7,0,0" Style="{StaticResource PhoneTextTitle1Style}"/> </StackPanel> <!--ContentPanel - 在此处放置其他内容--> <Grid x:Name="ContentPanel" Grid.Row="1" Margin="12,0,12,0"> <StackPanel> <TextBlock Text="学号："/> <TextBox Name="txtNo"/> <TextBlock Text="姓名：" Margin="0,7,0,0"/> <TextBox Name="txtName"/> <TextBlock Margin="0,7,0,0" Text="Email："/> <TextBox Name="txtEmail"/> </StackPanel> </Grid> </Grid> <phone:PhoneApplicationPage.ApplicationBar> <shell:ApplicationBar IsVisible="True"> <shell:ApplicationBarIconButton IconUri="appbar.save.rest.png" Text="保存" Click="onSave"/> <shell:ApplicationBarIconButton IconUri="appbar.cancel.rest.png" Text="取消" Click="onCancel"/> </shell:ApplicationBar> </phone:PhoneApplicationPage.ApplicationBar> </phone:PhoneApplicationPage>
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;
namespace LocalDataBase
{
public partial class AddPage : PhoneApplicationPage
{
public AddPage()
{
InitializeComponent();
}
private void onCancel(object sender, EventArgs e)
{
//NavigationService.Navigate(new Uri("/MainPage.xaml", UriKind.Relative));
if (NavigationService.CanGoBack)
{
NavigationService.GoBack();
}
}
private void onSave(object sender, EventArgs e)
{
if (txtNo.Text == "")
{
MessageBox.Show("学号不能为空。"); return;
}
if (txtName.Text == "")
{
MessageBox.Show("姓名不能为空。"); return;
}
using (MyDataContext dc = new MyDataContext())
{
if (dc.Students.Where(c => c.StuNo == txtNo.Text).Count() > 0)
{
MessageBox.Show("输入的学号已经存在。"); return;
}
Students stu = new Students()
{
StuNo = txtNo.Text,
Name = txtName.Text,
Email = txtEmail.Text
};
dc.Students.InsertOnSubmit(stu);
dc.SubmitChanges();
}
//NavigationService.Navigate(new Uri("/MainPage.xaml", UriKind.Relative));
if (NavigationService.CanGoBack)
{
NavigationService.GoBack();
}
}
}
}
EditPage.xaml
<phone:PhoneApplicationPage x:Class="LocalDataBase.EditPage" 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" FontFamily="{StaticResource PhoneFontFamilyNormal}" FontSize="{StaticResource PhoneFontSizeNormal}" Foreground="{StaticResource PhoneForegroundBrush}" SupportedOrientations="Portrait" Orientation="Portrait" mc:Ignorable="d" d:DesignHeight="696" d:DesignWidth="480" shell:SystemTray.IsVisible="True"> <!--LayoutRoot 是包含所有页面内容的根网格--> <Grid x:Name="LayoutRoot" Background="Transparent"> <Grid.RowDefinitions> <RowDefinition Height="Auto"/> <RowDefinition Height="*"/> </Grid.RowDefinitions> <!--TitlePanel 包含应用程序的名称和页标题--> <StackPanel x:Name="TitlePanel" Grid.Row="0" Margin="12,17,0,28"> <TextBlock x:Name="ApplicationTitle" Text="我的应用程序" Style="{StaticResource PhoneTextNormalStyle}"/> <TextBlock x:Name="PageTitle" Text="编辑记录" Margin="9,-7,0,0" Style="{StaticResource PhoneTextTitle1Style}"/> </StackPanel> <!--ContentPanel - 在此处放置其他内容--> <Grid x:Name="ContentPanel" Grid.Row="1" Margin="12,0,12,0"> <StackPanel> <TextBlock Text="学号："/> <TextBlock Name="txtNo"/> <TextBlock Text="姓名：" Margin="0,7,0,0"/> <TextBox Name="txtName"/> <TextBlock Margin="0,7,0,0" Text="Email："/> <TextBox Name="txtEmail"/> </StackPanel> </Grid> </Grid> <phone:PhoneApplicationPage.ApplicationBar> <shell:ApplicationBar IsVisible="True"> <shell:ApplicationBarIconButton IconUri="appbar.save.rest.png" Text="保存" Click="onSave"/> <shell:ApplicationBarIconButton IconUri="appbar.cancel.rest.png" Text="取消" Click="onCancel"/> </shell:ApplicationBar> </phone:PhoneApplicationPage.ApplicationBar> </phone:PhoneApplicationPage>
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;
namespace LocalDataBase
{
public partial class EditPage : PhoneApplicationPage
{
public EditPage()
{
InitializeComponent();
}
private void onSave(object sender, EventArgs e)
{
if (txtName.Text == "")
{
MessageBox.Show("姓名不能为空。"); return;
}
using (MyDataContext dc = new MyDataContext())
{
Students stu = dc.Students.FirstOrDefault(s => s.StuNo == txtNo.Text);
if (stu != null)
{
stu.Name = txtName.Text;
stu.Email = txtEmail.Text;
dc.SubmitChanges();
}
}
//NavigationService.Navigate(new Uri("/MainPage.xaml", UriKind.Relative));
if (NavigationService.CanGoBack)
{
NavigationService.GoBack();
}
}
private void onCancel(object sender, EventArgs e)
{
//NavigationService.Navigate(new Uri("/MainPage.xaml", UriKind.Relative));
if (NavigationService.CanGoBack)
{
NavigationService.GoBack();
}
}
protected override void OnNavigatedTo(System.Windows.Navigation.NavigationEventArgs e)
{
base.OnNavigatedTo(e);
if (NavigationContext.QueryString.ContainsKey("sno"))
{
txtNo.Text = NavigationContext.QueryString["sno"];
using (MyDataContext dc = new MyDataContext())
{
Students stu = dc.Students.FirstOrDefault(s => s.StuNo == txtNo.Text);
if (stu != null)
{
txtName.Text = stu.Name;
txtEmail.Text = stu.Email;
}
}
}
}
}
}
MyDataContext.cs
using System; using System.Net; using System.Windows; using System.Windows.Controls; using System.Windows.Documents; using System.Windows.Ink; using System.Windows.Input; using System.Windows.Media; using System.Windows.Media.Animation; using System.Windows.Shapes; using Microsoft.Phone.Data.Linq; using System.Data.Linq; using System.Data.Linq.Mapping; using System.ComponentModel; namespace LocalDataBase { public class MyDataContext : DataContext { /// <summary> /// 连接字符串 /// </summary> public const string ConnectionString = "Data Source='isostore:/MyDb.sdf';Password='123456'"; /// <summary> /// 构造函数 /// </summary> public MyDataContext() : base(ConnectionString) { } public Table<Students> Students; } [Table] public class Students : INotifyPropertyChanged, INotifyPropertyChanging { string _stuNo; /// <summary> /// 学号 /// </summary> [Column(CanBeNull = false, IsPrimaryKey = true)] public string StuNo { get { return this._stuNo; } set { if (_stuNo != value) { OnPropertyChanging(new PropertyChangingEventArgs("StuNo")); this._stuNo = value; OnPropertyChanged(new PropertyChangedEventArgs("StuNo")); } } } string _name; /// <summary> /// 姓名 /// </summary> [Column] public string Name { get { return this._name; } set { if (_name != value) { OnPropertyChanging(new PropertyChangingEventArgs("Name")); _name = value; OnPropertyChanged(new PropertyChangedEventArgs("Name")); } } } string _email; /// <summary> /// 电邮 /// </summary> [Column] public string Email { get { return this._email; } set { if (_email != value) { OnPropertyChanging(new PropertyChangingEventArgs("Email")); _email = value; OnPropertyChanged(new PropertyChangedEventArgs("Email")); } } } public event PropertyChangingEventHandler PropertyChanging; public event PropertyChangedEventHandler PropertyChanged; protected void OnPropertyChanging(PropertyChangingEventArgs e) { if (PropertyChanging != null) { PropertyChanging(this, e); } } protected void OnPropertyChanged(PropertyChangedEventArgs e) { if (PropertyChanged != null) { PropertyChanged(this, e); } } } }