如何绑定wpf DataGridComboBoxColumn ??? [英] How to Bind wpf DataGridComboBoxColumn？？？

问题描述

   DataGridComboBoxColumn dataCombox = new DataGridComboBoxColumn();
          dataCombox.Header ="Name";

           Binding b = new Binding();
           b.Path = new PropertyPath("ComboxClass");
          dataCombox.ItemsSource = listCom;
          dataCombox.SelectedItemBinding = b;

          dataCombox.SelectedValuePath = "PriceTypeId";
          dataCombox.DisplayMemberPath = "PriceTypeValue";
dgForData.Columns.Add(dataCombox);

然后绑定

and then Binding

ObservableCollection<CommClassForDataGrid> listData = new ObservableCollection<CommClassForDataGrid>();
            string path = comSelect.comPath;
            IEnumerable<string> fileNameList = new List<string>();
 
            fileNameList = FileTools.GetLastDirXmlNodeString(path);
 
            foreach (string filePath in fileNameList)
            {
 
                CommClassForDataGrid com = new CommClassForDataGrid();
                CommClassForComBox cb = new CommClassForComBox();
                cb.PriceTypeValue = "xiaoming";
                cb.PriceTypeId = comSelect.flag;
 
                listData.Add(com);
            }
 
            this.dgForData.ItemsSource = listData;

我希望得到一组默认的是xiaoming DataGridComboBoxColumn数据。

现在界面显示没有值的方式

I hope to get a set of default is xiaoming DataGridComboBoxColumn data.
Now the way the interface displays no value

推荐答案

Bind a List to the ItemsSource of the DataGridComboBoxColumn and then specify the SelectedItemBinding, DisplayMemberPath, SelectedValueBinding or the SelectedValuePath property.

Below is sample code from social.msdn site:

XAML:

    <DataGrid AutoGenerateColumns="False" Height="200" HorizontalAlignment="Left" Name="dataGrid1" VerticalAlignment="Top" Width="308">
      <DataGrid.Columns>
        <DataGridTextColumn Header="Name" Binding="{Binding Name}"/>
        <DataGridComboBoxColumn x:Name="ComboBoxColumn" Header="Position"  SelectedItemBinding="{Binding Position}"/>
      </DataGrid.Columns>
    </DataGrid>

Code:

public partial class MainWindow : Window
  {
    public ObservableCollection<Player> Players { get; set; }
    public ObservableCollection<string> Positions { get; set; }
    public MainWindow()
    {
      Positions = new ObservableCollection<string>() { "Forward", "Defense", "Goalie" };
      Players = new ObservableCollection<Player>(){
                    new Player() {Name = "Tom",Position= "Forward"},
                    new Player() {Name = "Dick", Position= "Defense"},
                    new Player() {Name = "Harry", Position= "Goalie"}
      };
      InitializeComponent();
      ComboBoxColumn.ItemsSource = Positions;
      dataGrid1.ItemsSource = Players;
    }
  }

  public class Player
  {
    public string Name { set; get; }
    public string Position { set; get; }
  }

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