綁定到DataTable的Datagrid不會顯示動態添加到DataTable的任何行

Question

我有這樣的dataGrid：

公共類myGrid：DataGrid {

    DataTable Table = new DataTable();

    public myGrid()
    {
    }

    protected override void OnInitialized(EventArgs e)
    {
        base.OnInitialized(e);

        List<string> List = new List<string> { "Size1", "Size2", "Price", "Price2", "Note"} ;
        foreach (string Name in List)
        {
            Table.Columns.Add(Name);

            DataGridTextColumn c = new DataGridTextColumn();
            c.Header = Name;
            c.Binding = new Binding(Table.Columns[Name].ColumnName);
            this.Columns.Add(c);
        }

        DataColumn[] keys = new DataColumn[1];
        keys[0] = Table.Columns["PRICE"];
        Table.PrimaryKey = keys;

        this.DataContext = Table;
    }



    public void AddRow(object[] Values)
    {
            Table.LoadDataRow(Values, true);

    }

}

調用AddRow后，Table確實有一行，但myGrid沒有。 我究竟做錯了什么？

謝謝！

Answer 1

使用MVVM將是一個更好的apporach ....你甚至不會為此目的繼承網格...

查看模型

class MyViewModel:INotifyPropertyChanged
{
     private ObservableColleciton<string> myCollection;

   public MyViewModel()
   {
      //FunctiontoFillCollection()
   }

   public ObservableColleciton<string> MyCollection
   {
         get { return myCollection;}
         set
         {
             mycolletion = value;
             // i am leaving implemenation of INotifyPropertyChanged on you 
             // google it.. :)
             OnpropertyChanged("MyCollection");
         }
   }
}

View.Xaml

<DataGrid ItemsSource={Binding Path=MyCollection}>
 <!--Make Columns according to you-->
</DataGrid>

View.xaml.cs

/// <summary>
/// Interaction logic for MainView.xaml
/// </summary>
public partial class MainView : Window
{
    public MainView()
    {
        InitializeComponent();
        this.DataContext = new MyViewModel();
    }
}

現在添加MyColleciton到MyColleciton ，它將在View中自動反映.....

閱讀MVVm實現的一些文章，以便更好地理解......

Answer 2

使表成為公共財產：

private DataTable m_Table

public DataTable Table
{
    get { return this.m_Table; }

    protected set { m_Table = value; NotifyPropertyChanged("Table"); }
}

你還需要調用NotifyPropertyChanged（“Table”）; 在你的AddRow函數中。