Binding是Wpf的核心内容之一
1、下面是Binding基础的一个例子。
XAML：
<Grid>
<TextBox x:Name=
"myTextBox"
Height=
"80"
HorizontalAlignment=
"Left"
VerticalAlignment=
"Top"
Width=
"200"
/>
<Button Height=
"23"
HorizontalAlignment=
"Left"
Margin=
"38,89,0,0"
Name=
"button1"
VerticalAlignment=
"Top"
Width=
"75"
Click=
"button1_Click"
>Button</Button>
</Grid>
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C# Code
public
partial
class
BindingTestxaml : Window
{
Customer cust;
public
BindingTestxaml()
{
InitializeComponent();
BindingTest();
}
private
void
BindingTest()
{
//准备数据源
cust =
new
Customer();
// cust.Name = "Tom";
//准备Binding
Binding bind =
new
Binding();
bind.Source = cust;
bind.Path =
new
System.Windows.PropertyPath(
"Name"
);
//使用Binding连接数据源与Binding目标
BindingOperations.SetBinding(myTextBox, TextBox.TextProperty, bind);
}
private
void
button1_Click(
object
sender, RoutedEventArgs e)
{
cust.Name +=
" Tom"
;
}
}
public
class
Customer:INotifyPropertyChanged
{
private
string
name;
public
string
Name
{
get
{
return
name; }
set
{
this
.name = value;
//激发事件
if
(PropertyChanged !=
null
)
this
.PropertyChanged.Invoke(
this
,
new
PropertyChangedEventArgs(
"Name"
));
}
}
#region INotifyPropertyChanged 成员
public
event
PropertyChangedEventHandler PropertyChanged;
#endregion
}
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当然上面的绑定也可以变成一句话的形式：如
//使用Binding连接数据源与Binding目标
BindingOperations.SetBinding(myTextBox, TextBox.TextProperty,
new
Binding(
"Name"
) { Source= cust =
new
Customer()});
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2、没有Source的Binding——使用DataContext作为Binding的源，下面是一个简单的例子
先创建一个名为Sutdent的类，它有三个ID，Name，Age三个属性:
public
class
Student
{
public
string
ID{
get
;
set
;}
public
string
Name {
get
;
set
; }
public
string
Age {
get
;
set
; }
}
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然后XAML创建程序UI：
<StackPanel Background=
"LightBlue"
Margin=
"0,118,0,0"
HorizontalAlignment=
"Right"
Width=
"201"
Height=
"122"
VerticalAlignment=
"Top"
>
<StackPanel.DataContext>
<local:Student ID=
"10"
Name=
"Work Hard Work Smart"
Age=
"30"
/>
</StackPanel.DataContext>
<TextBox Height=
"23"
HorizontalAlignment=
"Center"
Margin=
"10"
Name=
"textBox10"
VerticalAlignment=
"Top"
Text=
"{Binding Path=ID}"
Width=
"164"
/>
<TextBox Height=
"23"
HorizontalAlignment=
"Center"
Margin=
"10"
Name=
"textBox11"
VerticalAlignment=
"Top"
Text=
"{Binding Path=Name}"
Width=
"164"
/>
<TextBox Height=
"23"
HorizontalAlignment=
"Center"
Name=
"textBox12"
VerticalAlignment=
"Top"
Text=
"{Binding Path=Age}"
Width=
"164"
/>
</StackPanel>
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三个TextBox的Text通过Binding获取值，Bindng指定了Path，没有指定Source。
本文转自Work Hard Work Smart博客园博客，原文链接：http://www.cnblogs.com/linlf03/archive/2011/09/13/2175278.html，如需转载请自行联系原作者
