WPF Databinding----Collections

来源：百度文库 编辑：神马文学网 时间：2024/04/29 02:28:51
WPF(Windows Presentation Fundation) databinding功能能很好的显示listbox,　listview中的内容．在其中有四个要素：1.绑定目标(binding target), 2. 目标属性(target property), 3.绑定的源数据( binding source), 4.　绑定的属性，通过关键字Path来指定（ a path to the source to use）如下图：

数据绑定几个必要做的事：
1. 实现 INotifyPorpertyChanged接口,
2.有属性改变时通过PropertyChangedEventHandler来捕捉
3.ObservableCollection是INotifyPropertyChanged内建的实现数据绑定.
4.XAML文件中必需添加xmlns:="clr-namespace:YourNameSpace"
好,让我们来看一个具体的例子.创建一个WPF应用程序,采用C#来做.
文件 Data.cs:
using System;
using System.ComponentModel;
using System.Collections.ObjectModel;
namespace Collections
{
public class Person : INotifyPropertyChanged
{
//the person‘s attribute sex
private string name;
private string sex;
public event PropertyChangedEventHandler PropertyChanged;
//person constructor
public Person()
{
}
public Person(string named, string sexy)
{
this.name = named;
this.sex = sexy;
}
//person name attribute
public string Name
{
get { return name; }
set
{
this.name = ;
OnPropertyChanged("Name");
}
}
//person sex attribute
public string Sex
{
get { return sex; }
set
{
this.sex = ;
OnPropertyChanged("Sex");
}
}
//override the ToString method for dispaly Person‘s name
// if not override it, it will be displayed as "Collections.Person" but not person‘s name
public override string ToString()
{
return name.ToString();
}
//cacth up the property changed event
protected void OnPropertyChanged(string inputstring)
{
PropertyChangedEventHandler handler = PropertyChanged;
if (handler != null)
{
handler(this,new PropertyChangedEventArgs(inputstring));
}
}
}
public class People : ObservableCollection
{
public People():base()
{
Add(new Person("Ekin", "Male"));
Add(new Person("Jack", "Male"));
Add(new Person("Jane", "Female"));
}
}
}
Windows1.xaml文件,注意XAML文件必需保持父子层严格的缩进.
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:Local="clr-namespace:Collections"       
Title="Window1" Height="300" Width="300">




BorderBrush="Red" BorderThickness="1" Padding="8">



















ContentTemplate="{Binding Source = {StaticResourceDetailTemplate}}" />



在这里相对的绑定我都用相同的着色标示出来了.
OK,这就搞定了.
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