小编rup*_*iab的帖子

目前我正在研究WPF应用程序(使用MVVM),我在其中显示数据DataGridView.

<DataGrid RowHeaderWidth="0" ItemsSource="{Binding PartsList,UpdateSourceTrigger=PropertyChanged}" AutoGenerateColumns="False">
    <DataGrid.Columns>
        <DataGridTextColumn Header="Item Name" IsReadOnly="True" Width="*" Binding="{Binding ProductName}"></DataGridTextColumn>
        <DataGridTextColumn Header="Model Name" IsReadOnly="True" Width="*" Binding="{Binding CarModelName}"></DataGridTextColumn>
        <DataGridTextColumn Header="Company Name" IsReadOnly="True" Width="*" Binding="{Binding CompanName}"></DataGridTextColumn>
        <DataGridTextColumn Header="Price" IsReadOnly="True" Width="*" Binding="{Binding Rate}">
    </DataGrid.Columns>
</DataGrid>

这里PartsList是ObservableCollection实体Part的一个.

现在我想添加自定义列到DataGrid显示折扣和另一列显示净金额.我怎样才能做到这一点？

请提出一个好主意,因为我需要处理成千上万的记录,因此性能对我来说非常重要.

先感谢您.

import org.jdesktop.application.SingleFrameApplication;
import java.awt.Container;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JPanel;
import org.jdesktop.application.FrameView;

public class Welcome extends FrameView 
{
    SearchPanelClass panel1 = new SearchPanelClass();
    AddMaterialPanel panel2 = new AddMaterialPanel();
    Container container= AutomobileApplication.getApplication().getMainFrame();
    public Welcome(SingleFrameApplication app) 
    {
       super(app);
       initMenu();
}

private class MenuAction implements ActionListener {

private SearchPanelClass panel;
private MenuAction(SearchPanelClass pnl) 
{

    this.panel = pnl;

}
private AddMaterialPanel AddMaterialPan;
private MenuAction(AddMaterialPanel pnl) 
{
    this.AddMaterialPan = pnl;
}

public void actionPerformed(ActionEvent e) {
    String command = …