做过WinForm数据库开发的人，一定有类似经历：DataGrid绑定后，如果允许行编辑，数据一顿修改后，想批量保存修改后的结果，通常是将DataGrid的所有行遍历，用FindControl找出其中的TextBox之类的控件，取值，然后处理，如果行模板中的控件变化了，可能之前的处理代码又要修改...
.Net发展到WPF/SL时代，有了双向绑定，这种痛苦经历已经一去不返了，我们只需要关注数据即可，GridView与数据源之间会相互通知各自的变化情况，批量保存时，不管GridView中的数据用户如何修改，也不用去理会行模板中的控件名是啥，直接对数据源进行处理即可。
Xaml示例：
<UserControl xmlns:telerik="http://schemas.telerik.com/2008/xaml/presentation" x:Class="SLShortCut.MainPage"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
mc:Ignorable="d"
d:DesignHeight="300" d:DesignWidth="400">
<StackPanel x:Name="LayoutRoot" Background="White">
<telerik:RadGridView ShowGroupPanel="False" AutoGenerateColumns="False" x:Name="grd1" ItemsSource="{Binding Path=LstData, Mode=TwoWay}" SelectionMode="Extended">
<telerik:RadGridView.Columns>
<telerik:GridViewSelectColumn />
<telerik:GridViewColumn Header="姓名">
<telerik:GridViewColumn.CellTemplate>
<DataTemplate>
<TextBox x:Name="txtName" Text="{Binding Name,Mode=TwoWay}" VerticalAlignment="Center" Height="22"></TextBox>
</DataTemplate>
</telerik:GridViewColumn.CellTemplate>
</telerik:GridViewColumn>
<telerik:GridViewColumn Header="年龄">
<telerik:GridViewColumn.CellTemplate>
<DataTemplate>
<TextBox x:Name="txtAge" Text="{Binding Age,Mode=TwoWay}" VerticalAlignment="Center" Height="22"></TextBox>
</DataTemplate>
</telerik:GridViewColumn.CellTemplate>
</telerik:GridViewColumn>
<telerik:GridViewColumn Header="操作">
<telerik:GridViewColumn.CellTemplate>
<DataTemplate>
<StackPanel Orientation="Horizontal">
<telerik:RadButton Content="+" Width="20" Height="20" VerticalAlignment="Center" x:Name="btnAdd" Click="btnAdd_Click"/>
<telerik:RadButton Content="-" Margin="5,0,0,0" Width="20" Height="20" VerticalAlignment="Center" x:Name="btnSub" Click="btnSub_Click"/>
</StackPanel>
</DataTemplate>
</telerik:GridViewColumn.CellTemplate>
</telerik:GridViewColumn>
</telerik:RadGridView.Columns>
</telerik:RadGridView>
<telerik:RadButton Height="22" Width="100" Margin="0,10,0,0" x:Name="btnSave" Click="btnSave_Click">全部保存</telerik:RadButton>
</StackPanel>
</UserControl>
Xaml.cs部分
using System.Collections.ObjectModel;
using System.ComponentModel;
using System.Windows;
using System.Windows.Controls;
using Telerik.Windows.Controls;
namespace SLShortCut
{
public partial class MainPage : UserControl
{
PersonCollection pc = new PersonCollection();
public MainPage()
{
InitializeComponent();
this.Loaded += new RoutedEventHandler(MainPage_Loaded);
}
void MainPage_Loaded(object sender, RoutedEventArgs e)
{
pc.LstData.Add(new Person() { Name = "张三", Age = 1 });
pc.LstData.Add(new Person() { Name = "李四", Age = 2 });
this.DataContext = pc;
}
private void btnAdd_Click(object sender, RoutedEventArgs e)
{
pc.LstData.Add(new Person() { });
}
private void btnSub_Click(object sender, RoutedEventArgs e)
{
var p = (sender as RadButton).DataContext as Person;
pc.LstData.Remove(p);
}
private void btnSave_Click(object sender, RoutedEventArgs e)
{
foreach (var item in this.pc.LstData)
{
MessageBox.Show(string.Format("Name:{0},Age:{1}", item.Name, item.Age));
}
}
}
public class PersonCollection
{
private ObservableCollection<Person> lstData = new ObservableCollection<Person>();
public ObservableCollection<Person> LstData
{
get { return lstData; }
set { lstData = value; }
}
}
public class Person : INotifyPropertyChanged
{
public event PropertyChangedEventHandler PropertyChanged;
private string _name = "";
public string Name
{
get { return _name; }
set
{
_name = value;
if (PropertyChanged != null)
{
PropertyChanged(this, new PropertyChangedEventArgs("Name"));
}
}
}
private int _age = 0;
public int Age
{
get { return _age; }
set
{
_age = value;
if (PropertyChanged != null)
{
PropertyChanged(this, new PropertyChangedEventArgs("Age"));
}
}
}
}
}
代码比较简短，就懒得写注释了
