关于wpf,datagrid,双向数据绑定用法

定义一个数据绑定的datagrid,用来呈现数据,其中第二列是模板列,要求可以双向绑定
checkbox

<DataGrid x:Name="dataGrid" Grid.Row="0" ItemsSource="{Binding}" AutoGenerateColumns="False">
            <DataGrid.Columns>
                <DataGridTextColumn Header="AA" Binding="{Binding AA,Mode=TwoWay}" />
                <DataGridTemplateColumn Header="BB">
                    <DataGridTemplateColumn.CellTemplate>
                        <DataTemplate>
                            <CheckBox IsChecked="{Binding BB, Mode=TwoWay}" />
                        </DataTemplate>
                    </DataGridTemplateColumn.CellTemplate>
                </DataGridTemplateColumn>
            </DataGrid.Columns>
        </DataGrid>

绑定的数据源

ObservableCollection<class1> bindingData = new ObservableCollection<class1>();

public class class1
    {
        public string AA{get;set;}
        public bool BB { get; set; }
    }


public void InitDataBinding()
        {
            class1 a = new class1();
            a.AA = "aaaaa";
            a.BB = true;

            bindingData.Add(a);
        }

//绑定,初始化
dataGrid.ItemsSource = bindingData;

wpf 双向绑定
[解决办法]

<StackPanel>
        <TextBlock x:Name="ShowBBValue" Text="{Binding BB}" />
        <DataGrid x:Name="dataGrid" Grid.Row="0" ItemsSource="{Binding}" AutoGenerateColumns="False">
            <DataGrid.Columns>
                <DataGridTextColumn Header="AA" Binding="{Binding AA,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}" />
                <DataGridTemplateColumn Header="BB">
                    <DataGridTemplateColumn.CellTemplate>
                        <DataTemplate>
                            <CheckBox IsChecked="{Binding BB, Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}" />
                        </DataTemplate>
                    </DataGridTemplateColumn.CellTemplate>
                </DataGridTemplateColumn>
            </DataGrid.Columns>
        </DataGrid>
    </StackPanel>

public partial class MainWindow : Window
    { 
 
        class1 a = new class1();
        ObservableCollection<class1> bindingData = new ObservableCollection<class1>();
        public MainWindow()
        {
            InitializeComponent();
            InitDataBinding();
        }

        void InitDataBinding()
        {
            a.AA = "aaaaa";
            a.BB = true;
            bindingData.Add(a);
            ShowBBValue.DataContext = this.a;
            dataGrid.ItemsSource = bindingData;
        }

    }

    
 
    public class class1 : INotifyPropertyChanged  
    {  
   
        private bool  _bb;
        private string _aa;

        public string AA
        {
            get { return _aa; }
            set { this._aa= value; OnPropertyChanged("AA"); }
        }
        
        public bool BB
        { 
            get { return this._bb; } 
            set 
            { 
                this._bb= value; 
                OnPropertyChanged("BB"); 
            } 
        }  
        public event PropertyChangedEventHandler PropertyChanged;  
   
        void OnPropertyChanged(string name)  
        {  
            if (PropertyChanged != null)  
                this.PropertyChanged(this, new PropertyChangedEventArgs(name));  
        }  
   
    }  

直接给你写了个例子 你看看吧