这一章全部讲解绑定.估计还有一章基础知识就讲解完了,后面的可能我就不更新了,都是用工具生成一些数据绑定,2d,3d的效果.我贴上1000多行代码,给大家看看效果没什么意思.
<?xml version="1.0" encoding="utf-8" ?>
<Persons xmlns="">
<person Name="Person1">
<ID>1</ID>
<Name>张三丰</Name>
<Age>49</Age>
</person>
<person Name="Person2">
<ID>2</ID>
<Name>阿贵</Name>
<Age>29</Age>
</person>
<person Name="Person3">
<ID>3</ID>
<Name>陈世美</Name>
<Age>103</Age>
</person>
<person Name="Person4">
<ID>4</ID>
<Name>李小龙</Name>
<Age>59</Age>
</person>
</Persons>
一个xml文件.用于数据绑定
<Window x:Class="WPFBindXML.Window1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
Title="Window1" Height="334" Width="496">
<Grid>
<ListView Margin="12,12,12,121" Name="listView1" SelectionChanged="listView1_SelectionChanged">
<ListView.View>
<GridView>
<GridViewColumn Header="编号" DisplayMemberBinding="{Binding XPath=ID}" Width="100" />
<GridViewColumn Header="姓名" DisplayMemberBinding="{Binding XPath=Name}" Width="100"/>
<GridViewColumn Header="年龄" DisplayMemberBinding="{Binding XPath=Age}" Width="100">
</GridViewColumn>
</GridView>
</ListView.View>
</ListView>
<Label Height="25" Margin="12,0,12,90" Name="label1" VerticalAlignment="Bottom"></Label>
<Button Height="22" Margin="20,0,124,45" Name="button1" VerticalAlignment="Bottom" Click="button1_Click">将XML 文件绑定到元素</Button>
<Button Height="27" Margin="20,0,124,12" Name="button2" VerticalAlignment="Bottom" Click="button2_Click">将 自定义对象绑定到元素</Button>
<ComboBox Name="com1" Height="20" Width="200" />
</Grid>
</Window>
下面是后台绑定代码
namespace WPFBindXML
{
public partial class Window1 : Window
{
public Window1()
{
InitializeComponent();
}
private void button1_Click(object sender, RoutedEventArgs e)
{
//让一个listview绑定一个xml文件.
XmlDocument doc = new XmlDocument();
doc.Load(@"..\..\XMLFile1.xml");
//直接访问xml数据
XmlDataProvider provider = new XmlDataProvider();
provider.Document = doc; //绑定到一个xml对象
provider.XPath = @"/Persons/person"; //xpath查询
listView1.DataContext = provider;//listview的数据源指向
listView1.SetBinding(ListView.ItemsSourceProperty, new Binding());//绑定
}
private void listView1_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
if (e.AddedItems.Count != 0)
{
XmlElement a = (XmlElement)e.AddedItems[0];
this.label1.Content = a.InnerXml;//这个是你选择某一项 把值拿出来
}
}
private void button2_Click(object sender, RoutedEventArgs e)
{
//Pesrsion P = new Pesrsion("1", "CHK76REN", "20");
//Binding myBinding = new Binding("Name");
//myBinding.Source = P;
//label1.SetBinding(Label.ContentProperty, myBinding);
//banding一个自定义的数据源
当然 我们还可以去绑定一个下拉框的选项值
List<Pesrsion> pes = new List<Pesrsion>();
pes.Add(new Pesrsion() { ID = "1", Name = "1", Age = "1" });
pes.Add(new Pesrsion() { ID = "1", Name = "2", Age = "1" });
pes.Add(new Pesrsion() { ID = "1", Name = "3", Age = "1" });
pes.Add(new Pesrsion() { ID = "1", Name = "4", Age = "1" });
com1.ItemsSource = pes;
com1.DisplayMemberPath = "Name";
}
}
public class Pesrsion
{
public Pesrsion(string id, string name, string age)
{
this.ID = id;
this.Name = name;
this.Age = age;
}
public string ID { get; set; }
public string Age { get; set; }
public string Name { get; set; }
}
}
我们已经了解了绑定xml文件,绑定自定义的对象,以及对象集合.
下面我们来看一个比较复杂的例子,banding自定义模板
<Window x:Class="WPF_自定义对象绑定.Window1"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="clr-namespace:WPF_自定义对象绑定"
SizeToContent="WidthAndHeight"
Title="WPF_自定义对象绑定" Background="#FF00CCCC">
//这个资源里面 我们又学习了新东西 就是自定义模板 这个也可以放在资源里面的
<Window.Resources>
<DataTemplate x:Key="UserDataTemp">
<Border Name="border" BorderBrush="Aqua" BorderThickness="1"
Padding="5" Margin="5">
<Grid>
<Grid.RowDefinitions>
<RowDefinition/>
<RowDefinition/>
<RowDefinition/>
<RowDefinition/>
<RowDefinition/>
</Grid.RowDefinitions>
<Grid.ColumnDefinitions>
<ColumnDefinition />
<ColumnDefinition />
</Grid.ColumnDefinitions>
<TextBlock Grid.Row="0" Grid.Column="0" Text="ID:"/>
<TextBlock Grid.Row="0" Grid.Column="1" Text="{Binding Path=Id}" />
<TextBlock Grid.Row="1" Grid.Column="0" Text="Name:"/>
<TextBlock Grid.Row="1" Grid.Column="1" Text="{Binding Path=Name}"/>
<TextBlock Grid.Row="2" Grid.Column="0" Text="Address:"/>
<TextBlock Grid.Row="2" Grid.Column="1" Text="{Binding Path=Address}"/>
<TextBlock Grid.Row="3" Grid.Column="0" Text="UserName:"/>
<TextBlock Grid.Row="3" Grid.Column="1" Text="{Binding Path=UserName}"/>
<TextBlock Grid.Row="4" Grid.Column="0" Text="PassWord:"/>
<TextBlock Grid.Row="4" Grid.Column="1" Text="{Binding Path=PassWord}"/>
</Grid>
</Border>
</DataTemplate>
</Window.Resources>
<StackPanel>
<Label Content="WPF_自定义对象绑定" Height="73" Name="label1" FontSize="24" Width="426" />
<TextBlock Margin="10,0,0,0">选择项</TextBlock>
<ListBox SelectionChanged="ListBox_SelectionChanged"
SelectedIndex="0" Margin="10,0,10,0" >
<ListBoxItem>第一条</ListBoxItem>
<ListBoxItem>第二条</ListBoxItem>
<ListBoxItem>第三条</ListBoxItem>
</ListBox>
//让listbox去指定一个自定义的模板
<ListBox Width="400" Margin="10" Name="myListBox"
HorizontalContentAlignment="Stretch"
ItemsSource="{Binding}"
ItemTemplate="{StaticResource UserDataTemp}"/>
</StackPanel>
</Window>
//后台绑定的代码
namespace WPF_自定义对象绑定
{
public partial class Window1 : Window
{
Users users = new Users();//初始化数据
public Window1()
{
InitializeComponent();
users.Add(new User(1, "asdf", "北京市东城区", "chk", "1111"));
users.Add(new User(2, "王三", "北京市朝阳区", "sss", "234"));
users.Add(new User(3, "刘金金", "北京市朝阳区", "ppp", "888"));
users.Add(new User(4, "程晓春", "北京市海淀区", "ppp", "888"));
}
private void ListBox_SelectionChanged(object sender, SelectionChangedEventArgs e)
{
int id = (sender as ListBox).SelectedIndex + 1;
this.DataContext = from u in users where u.Id == id select u;
}
}
}
下面是自定义的对象代码
using System.ComponentModel;
using System.Collections.ObjectModel;
namespace WPF_自定义对象绑定
{
//向客户端发出某一属性值已更改的通知, InotifyPropertyChanged这个接口的含义
public class User : INotifyPropertyChanged
{
private int id;
private string name;
private string address;
private string username;
private string password;
public event PropertyChangedEventHandler PropertyChanged;
public User()
{
}
public User(int id, string name, string address, string username, string password)
{
this.id = id;
this.name = name;
this.address = address;
this.username = username;
this.password = password;
}
public override string ToString()
{
return name.ToString();
}
public int Id
{
get { return id; }
set
{
id = value;
OnPropertyChanged("Id");//有更改就触发这个事件
}
}
public string Name
{
get { return name; }
set
{
name = value;
OnPropertyChanged("Name");
}
}
public string Address
{
get { return address; }
set
{
address = value;
OnPropertyChanged("Address");
}
}
public string UserName
{
get { return username; }
set
{
username = value;
OnPropertyChanged("UserName");
}
}
public string PassWord
{
get { return password; }
set
{
password = value;
OnPropertyChanged("PassWord");
}
}
protected void OnPropertyChanged(string info)
{
PropertyChangedEventHandler handler = PropertyChanged;
if (handler != null)
{
handler(this, new PropertyChangedEventArgs(info));
}
}
}
//这个类 和List<User>相等..
public class Users : ObservableCollection<User>
{
public Users()
: base()
{ }
}
}
忘了告诉大家怎么绑定dataTable了,不过我相信大家也是会的,不会的可以看看下面的代码.
CREATE TABLE [dbo].[Table_1]( [Id] [nvarchar](50) NULL, [Name] [nvarchar](50) NULL ) 创建一个最简单的表,就两个字段
<Window x:Class="WPFBindXML.Window2" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" Title="Window2" Height="334" Width="496">
<Grid>
<ListView Margin="12,12,12,121" Name="listView1">
<ListView.View>
<GridView>
<GridViewColumn Header="编号" DisplayMemberBinding="{Binding Path=Id}" Width="100" />
<GridViewColumn Header="姓名" DisplayMemberBinding="{Binding Path=Name}" Width="100" />
</GridView>
</ListView.View>
</ListView>
</Grid>
</Window>
代码比较乱,大家复制过去看看就行了.
namespace WPFBindXML
{
public partial class Window2 : Window
{
public Window2()
{
InitializeComponent();
string conStr = "server=.;uid=sa;pwd=1;database=ZuoYe";
SqlConnection con = new SqlConnection(conStr);
string sql = "select * from Table_1";
SqlCommand cmd = new SqlCommand(sql, con);
SqlDataAdapter adapter = new SqlDataAdapter(cmd);
DataSet ds = new DataSet();
adapter.Fill(ds);
this.listView1.DataContext = ds.Tables[0].DefaultView;
listView1.SetBinding(ListView.ItemsSourceProperty, new Binding());
}
}
}
代码比较简单,不说了,我就是随便写了几行代码,测试用的.