C# 如何使用WPF Datagrid复选框创建事件处理程序？

我想使用复选框创建Datagrid，绑定数据位于MainWindow的成员上，并且我想在选中要更改绑定对象的复选框时使用复选框。但是，我试图找到一个事件和事件处理程序，但找不到

您需要在ViewModel中添加事件处理程序

  public event PropertyChangedEventHandler PropertyChanged;
    private void OnPropertyChanged(string property)
    {
        if (PropertyChanged != null)
            PropertyChanged(this, new PropertyChangedEventArgs(property));
    }

        private string isIncluded;
    public string IsIncluded
    {
        get { return isIncluded; }
        set
        {
            isIncluded = value;
            OnPropertyChanged("IsIncluded");
        }
    }

例如：

<DataGrid x:Name="MappingDataGrid">
    <DataGrid.Columns>
        <DataGridCheckBoxColumn Header="Included" Binding="{Binding Path=IsIncluded}"></DataGridCheckBoxColumn>
        <DataGridTextColumn Header="From" Binding="{Binding Path=KeyString}"></DataGridTextColumn>
        <DataGridTextColumn Header="To" Binding="{Binding Path=ValueString}"></DataGridTextColumn>
    </DataGrid.Columns>

并将事件添加到ViewModel中的成员

  public event PropertyChangedEventHandler PropertyChanged;
    private void OnPropertyChanged(string property)
    {
        if (PropertyChanged != null)
            PropertyChanged(this, new PropertyChangedEventArgs(property));
    }

        private string isIncluded;
    public string IsIncluded
    {
        get { return isIncluded; }
        set
        {
            isIncluded = value;
            OnPropertyChanged("IsIncluded");
        }
    }

然后在xmal.cs中，您需要联系ViewModel的绑定

  public event PropertyChangedEventHandler PropertyChanged;
    private void OnPropertyChanged(string property)
    {
        if (PropertyChanged != null)
            PropertyChanged(this, new PropertyChangedEventArgs(property));
    }

        private string isIncluded;
    public string IsIncluded
    {
        get { return isIncluded; }
        set
        {
            isIncluded = value;
            OnPropertyChanged("IsIncluded");
        }
    }

并在绑定事件后添加xmal

public partial class Mapping: Window
{
    private readonly ViewModel viewModel = new ViewModel();
    public ViewModel ()
    {
        InitializeComponent();
        DataContext = viewModel ;
    }
}

---

您需要在ViewModel中添加事件处理程序

  public event PropertyChangedEventHandler PropertyChanged;
    private void OnPropertyChanged(string property)
    {
        if (PropertyChanged != null)
            PropertyChanged(this, new PropertyChangedEventArgs(property));
    }

        private string isIncluded;
    public string IsIncluded
    {
        get { return isIncluded; }
        set
        {
            isIncluded = value;
            OnPropertyChanged("IsIncluded");
        }
    }

例如：

<DataGrid x:Name="MappingDataGrid">
    <DataGrid.Columns>
        <DataGridCheckBoxColumn Header="Included" Binding="{Binding Path=IsIncluded}"></DataGridCheckBoxColumn>
        <DataGridTextColumn Header="From" Binding="{Binding Path=KeyString}"></DataGridTextColumn>
        <DataGridTextColumn Header="To" Binding="{Binding Path=ValueString}"></DataGridTextColumn>
    </DataGrid.Columns>

并将事件添加到ViewModel中的成员

  public event PropertyChangedEventHandler PropertyChanged;
    private void OnPropertyChanged(string property)
    {
        if (PropertyChanged != null)
            PropertyChanged(this, new PropertyChangedEventArgs(property));
    }

        private string isIncluded;
    public string IsIncluded
    {
        get { return isIncluded; }
        set
        {
            isIncluded = value;
            OnPropertyChanged("IsIncluded");
        }
    }

然后在xmal.cs中，您需要联系ViewModel的绑定

  public event PropertyChangedEventHandler PropertyChanged;
    private void OnPropertyChanged(string property)
    {
        if (PropertyChanged != null)
            PropertyChanged(this, new PropertyChangedEventArgs(property));
    }

        private string isIncluded;
    public string IsIncluded
    {
        get { return isIncluded; }
        set
        {
            isIncluded = value;
            OnPropertyChanged("IsIncluded");
        }
    }

并在绑定事件后添加xmal

public partial class Mapping: Window
{
    private readonly ViewModel viewModel = new ViewModel();
    public ViewModel ()
    {
        InitializeComponent();
        DataContext = viewModel ;
    }
}

它不是这样工作的。当您对DependencyProperty或实现INotifyPropertyChanged的对象使用绑定时，模型的更新会自动进行，并且您使用双向绑定，然后在更新模型时UI也会更新。因此，基本上您需要正确地实现绑定，并且它将在不使用显式“事件处理程序”的情况下工作，而显式“事件处理程序”不是它的工作方式。当您对DependencyProperty或实现INotifyPropertyChanged的对象使用绑定时，模型的更新会自动进行，并且您使用双向绑定，然后在更新模型时UI也会更新。因此，基本上您需要正确地实现绑定，并且它将在不使用显式“事件处理程序”的情况下工作