c# - 如何在双击时将当前选定的 DataGridView 项目发送到 ViewModel 中的命令

Question

是否可以将当前选定的DataGridRow发送到双击InputBinding？

我有这样的看法

<DataGrid ItemsSource="{Binding Consignments}" 
            x:Name="dataGridConsignments" 
            Margin="10,47,10,9.6"
            IsReadOnly="True" ColumnWidth="*" AutoGenerateColumns="False"
            xmlns:DataGridDoubleClickCommand="{Binding DataGridDoubleClick}">
    <DataGrid.InputBindings>
        <MouseBinding Gesture="LeftDoubleClick"  Command="{Binding RowDoubleClick}"/>
    </DataGrid.InputBindings>

...

viewModel 包含

private ICommand rowDoubleClick;
public ICommand RowDoubleClick
{
    get
    {
        return rowDoubleClick
            ?? (rowDoubleClick= new ActionCommand(() =>
            {
                // I need the selected row here
                MessageBox.Show("asd");
            }));
    }
}

通过此 ActionCommand 实现:

public class ActionCommand : ICommand
{
    private readonly Action _action;

    public ActionCommand(Action action)
    {
        _action = action;
    }

    public void Execute(object parameter)
    {
        _action();
    }

    public bool CanExecute(object parameter)
    {
        return true;
    }

    public event EventHandler CanExecuteChanged;
}

Answer 1

您可以尝试将此行添加到 DataGrid

ItemsSource="{Binding Consignments}" SelectedItem="{Binding SelectedConsignment}"

请记住通知“OnPropertyChanged”。