每按一下按钮，就会向DATAGrid添加一行

Question

对于每次单击按钮，我需要将列表内容添加到WPF中的数据网格视图的新行。

以下是代码，但它没有给出确切的行为。

public class DisplayTable
{
    public int AnalyteId { get; set; }
    public int UnitCode { get; set; }
    public int ReferenceValue { get; set; }

}


    DisplayTable d = new DisplayTable();
    List<DisplayTable> list = new List<DisplayTable>();
    private void btnAddAnalyte_Click(object sender, RoutedEventArgs e)
    {
        foreach (CheckBox item in this.AnalyteLitst.Items)
        {

            if (item.IsChecked == true)
            {
                d.AnalyteId = 1;

            }
        }


        foreach (CheckBox unit in this.UnitsList.Items)
        {


            if (unit.IsChecked == true)
            {
                d.UnitCode = 12;

            }

        }
        list.Add(d);
        dataGrid.AutoGenerateColumns = true;
        dataGrid.IsReadOnly = false;

        dataGrid.RowHeight = 30;
        dataGrid.ColumnWidth = 100;
        dataGrid.ItemsSource = list;
        dataGrid.CanUserAddRows = true;

  }

Answer 1

在视图的构造函数中设置ItemsSource 一次的DataGrid。同时将其设置为ObservableCollection<DisplayTable>并在事件处理程序中向此对象添加新对象：

ObservableCollection<DisplayTable> list = new ObservableCollection<DisplayTable>();
public MainWindow()
{
    InitializeComponent();
    dataGrid.AutoGenerateColumns = true;
    dataGrid.IsReadOnly = false;
    dataGrid.RowHeight = 30;
    dataGrid.ColumnWidth = 100;
    dataGrid.ItemsSource = list;
    dataGrid.CanUserAddRows = true;
}

private void btnAddAnalyte_Click(object sender, RoutedEventArgs e)
{
    DisplayTable d = new DisplayTable();
    foreach (CheckBox item in this.AnalyteLitst.Items)
    {
        if (item.IsChecked == true)
        {
            d.AnalyteId = 1;
        }
    }

    foreach (CheckBox unit in this.UnitsList.Items)
    {
        if (unit.IsChecked == true)
        {
            d.UnitCode = 12;
        }
    }
    list.Add(d);
}