开始更新一点有意思的了
首先 数据绑定 其中之一 Element 绑定
看例子
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<Window x:Class="WpfApplication20.MainWindow"
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xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
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xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
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Title="MainWindow" Height="156.383" Width="246.489" x:Name="MWindow">
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<Grid>
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<TextBox HorizontalAlignment="Left" Height="23" Margin="30,48,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Width="120" Text="{Binding ElementName=MWindow,Path=PresonName}"/>
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<TextBlock HorizontalAlignment="Left" Margin="30,16,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Width="42" Text="部门："/>
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<Button Content="提交" HorizontalAlignment="Left" Margin="30,85,0,0" VerticalAlignment="Top" Width="75" Click="Button_Click"/>
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<Button Content="重置" HorizontalAlignment="Left" Margin="127,85,0,0" VerticalAlignment="Top" Width="75" Click="Button_Click_1"/>
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<TextBlock HorizontalAlignment="Left" Margin="85,16,0,0" TextWrapping="Wrap" VerticalAlignment="Top" Text="{Binding ElementName=MWindow,Path=Department}"/>
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</Grid>
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</Window>
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public partial class MainWindow : Window,INotifyPropertyChanged
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{
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public MainWindow()
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{
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InitializeComponent();
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}
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private string department;
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public string Department
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{
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get { return "软件开发"; }
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}
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private string presonName;
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public string PresonName
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{
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get { return presonName; }
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set { presonName = value;
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OnPropertyChanged("PresonName");
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}
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}
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private void Button_Click(object sender, RoutedEventArgs e)
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{
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MessageBox.Show("Hi," + PresonName);
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}
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private void Button_Click_1(object sender, RoutedEventArgs e)
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{
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PresonName = "";
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}
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#region INotifyPropertyChanged 成员
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public event PropertyChangedEventHandler PropertyChanged;
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public void OnPropertyChanged(string name)
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{
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if(PropertyChanged!=null){
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PropertyChanged.Invoke(this,new PropertyChangedEventArgs(name));
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}
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}
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#endregion
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}
我们在这个例子里有俩个操作
一个是数据绑定
一个是数据通知
绑定 是用Element 指定window 窗体 因为 创建属性以后 window 窗体就有这个属性 通过名字.属性的方式
通知 需要继承 INotifyPropertyChanged
实现接口方法
public event PropertyChangedEventHandler PropertyChanged;
public void OnPropertyChanged(string name)
{
if(PropertyChanged!=null){
PropertyChanged.Invoke(this,new PropertyChangedEventArgs(name));
}
}
在需要通知的属性下面 加上
OnPropertyChanged（“”属性名“”）;
就可以起到通知作用