如何在DataGridCellEditEnding方法中获取DataGridTemplateColumn的值

问题描述

我有DataGrid，它的itemsource是一个名为weightitemData的对象列表。

我的数据网格中的所有列都是DataGridTextColumn，除了DataGridTemplateColumn和ComboBox之外。

我的问题是我无法在DataGridCellEditEnding方法内部获取更新的comBox值。

   <DataGridTemplateColumn Header="Crew" SortMemberPath="FsmTypes">
                <DataGridTemplateColumn.CellTemplate>
                    <DataTemplate>
                        <TextBlock Text="{Binding FsmType}"></TextBlock>
                    </DataTemplate>
                </DataGridTemplateColumn.CellTemplate>
                <DataGridTemplateColumn.CellEditingTemplate>
                    <DataTemplate>
                        <ComboBox ItemsSource="{Binding FsmTypes,Mode=TwoWay,UpdateSourceTrigger=PropertyChanged}" SelectedItem="{Binding FsmType,Mode=TwoWay}"></ComboBox>
                    </DataTemplate>
                </DataGridTemplateColumn.CellEditingTemplate>
            </DataGridTemplateColumn>




    private void DataGridCellEditEnding(object sender,DataGridCellEditEndingEventArgs e)
    {
        TextBlock cmb = e.EditingElement as TextBlock;

        if (e.Editaction == DataGridEditaction.Commit)
        {
            weightitemData wid = e.Row.DataContext as weightitemData;
        }
      }

解决方法

我刚刚解决了如下问题。

    private void DataGridCellEditEnding(object sender,DataGridCellEditEndingEventArgs e)
    {

        if (e.EditAction == DataGridEditAction.Commit)
        {
            WeightItemData wid = e.Row.DataContext as WeightItemData;

            if (e.Column.SortMemberPath.Equals("FsmTypes")) {
                FrameworkElement elmtTest = e.Column.GetCellContent(e.Row);
                ComboBox fsmTypeCombo = ApplicationUtility.FindVisualChild<ComboBox>(elmtTest);
                if(fsmTypeCombo!=null)
                {
                    wid.FsmType = fsmTypeCombo.SelectedValue.ToString();
                    
                }
            }
         }
      }

  public static T FindVisualChild<T>(DependencyObject obj) where T : DependencyObject
    {
        for (int i = 0; i < VisualTreeHelper.GetChildrenCount(obj); i++)
        {
            DependencyObject child = VisualTreeHelper.GetChild(obj,i);
            if (child != null && child is T)
                return (T)child;
            else
            {
                T childOfChild = FindVisualChild<T>(child);
                if (childOfChild != null)
                    return childOfChild;
            }
        }
        return null;
    }