WPF之Binding的三種簡單寫法

環境

類代碼

public class Person:INotifyPropertyChanged
{
private string name;
public string Name
{
get { return this.name; }
set
{
this.name = value;
notifyPropertyChanged("Name");
}
}
private int age;
public int Age
{
get { return this.age; }
set
{
this.age = value;
notifyPropertyChanged("Age");
}
}
public event PropertyChangedEventHandler PropertyChanged;
public void notifyPropertyChanged(string propertyName)
{
if (PropertyChanged != null)
{
PropertyChanged(this, new PropertyChangedEventArgs(propertyName));
}
}

窗體代碼

public partial class BindTest : Window
{
public Person per;
public BindTest()
{
InitializeComponent();
per = new Person { Age = 100, Name = "深入淺出WPF" };
Binding b = new Binding();
b.Source = per;
b.Path = new PropertyPath("Name");
BindingOperations.SetBinding(textbox, TextBox.TextProperty, b);
box.DataContext = per;
}

private void Button_Click(object sender, RoutedEventArgs e)
{

text.SetBinding(TextBox.TextProperty, new Binding("Name") { Source = per });
}
}

XAML代碼

<StackPanel >
<TextBox Margin="10" Height="40" x:Name="textbox"></TextBox>
<TextBox Margin="10" Height="40" x:Name="text"></TextBox>
<TextBox Margin="10" Height="40" Text="{Binding Name}" x:Name="box"></TextBox>
<Button Height="40" Click="Button_Click"></Button>
</StackPanel>

三種寫法

1,

C#

per = new Person { Age = 100, Name = "深入淺出WPF" };

Binding b = new Binding();

b.Source = per;

b.Path = new PropertyPath("Name");

BindingOperations.SetBinding(textbox, TextBox.TextProperty, b);

Xamll

<TextBox Margin="10" Height="40" x:Name="textbox"></TextBox>

2

C#

text.SetBinding(TextBox.TextProperty, new Binding("Name") { Source = per });

Xaml

<TextBox Margin="10" Height="40" x:Name="text"></TextBox>

3

C#

InitializeComponent();

box.DataContext = per;

Xaml

<TextBox Margin="10" Height="40" Text="{Binding Name}" x:Name="box"></TextBox>

其中Text="{Binding Name}"與Text="{Binding Path=Name}"