SilverLight中 GridView双向绑定刷新

  在sl里，gridview控件中，有一checkbox列，每一行开始都是一个checkbox。我想实现一个多选，然后让前面对应的checkbox自动勾选的东西，结果失败。。

 

解决办法：

绑定到的集合的对象类型（isCheckedUsers ）必须实现InotifyPropertyChanged接口，并且在isCheckedUsers.isChecked 更改时通知页面更改

示例：

<UserControl x:Class="SilverlightApplication1.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" xmlns:sdk="http://schemas.microsoft.com/winfx/2006/xaml/presentation/sdk"> <Grid x:Name="LayoutRoot" Background="White"> <sdk:DataGrid AutoGenerateColumns="False" ItemsSource="{Binding isCheckedUsersList}" Margin="10,10,0,0" Name="dataGrid1" SelectionChanged="dataGrid1_SelectionChanged"> <sdk:DataGrid.Columns> <!--选择--> <sdk:DataGridTemplateColumn Header="选择"> <sdk:DataGridTemplateColumn.CellTemplate> <DataTemplate> <CheckBox IsChecked="{Binding isChecked, Mode=TwoWay}" HorizontalAlignment="Center" VerticalAlignment="Center"></CheckBox> </DataTemplate> </sdk:DataGridTemplateColumn.CellTemplate> </sdk:DataGridTemplateColumn> <sdk:DataGridTextColumn Binding="{Binding Name,Mode=TwoWay}" Header="名称" CanUserResize="True" Width="200" /> </sdk:DataGrid.Columns> </sdk:DataGrid> </Grid></UserControl>

 

using System;using System.Collections.Generic;using System.Linq;using System.Net;using System.Windows;using System.Windows.Controls;using System.Windows.Documents;using System.Windows.Input;using System.Windows.Media;using System.Windows.Media.Animation;using System.Windows.Shapes;using System.ComponentModel;namespace SilverlightApplication1{ public partial class MainPage : UserControl { public MainPage() { InitializeComponent(); this.DataContext = this; } public List<isCheckedUsers> isCheckedUsersList { get { return new List<isCheckedUsers> { new isCheckedUsers{isChecked = false,Name="sdfdsfds"}, new isCheckedUsers{isChecked = false,Name="似懂非懂所发生的"}, new isCheckedUsers{isChecked = false,Name="和风电股份"}, new isCheckedUsers{isChecked = false,Name="fgertretretre"}, }; } } private void dataGrid1_SelectionChanged(object sender, SelectionChangedEventArgs e) { DataGrid gridUsers = sender as DataGrid; string showMessage = ""; if (gridUsers.SelectedItems.Count > 0) { foreach (isCheckedUsers dd in gridUsers.SelectedItems) { dd.isChecked = true; } } } } public class isCheckedUsers : ViewModelBase { private bool _isChecked; public bool isChecked { get { return _isChecked; } set { if (_isChecked == value) return; _isChecked = value; RaisePropertyChanged("isChecked"); } } private string _name; public string Name { get { return _name; } set { if (_name == value) return; _name = value; RaisePropertyChanged("Name"); } } } public class ViewModelBase : INotifyPropertyChanged { public event PropertyChangedEventHandler PropertyChanged; protected virtual void RaisePropertyChanged(string propertyName) { VerifyPropertyName(propertyName); var handler = PropertyChanged; if (handler != null) { handler(this, new PropertyChangedEventArgs(propertyName)); } } public void VerifyPropertyName(string propertyName) { var myType = this.GetType(); if (myType.GetProperty(propertyName) == null) { throw new ArgumentException("Property not found", propertyName); } } }}