如何获取 dataGrid1_BeginningEdit 事件中数据网格单元格的值？

Question

当我使用 dataGrid1_BeginningEdit 事件停止该事件时，我试图检查数据网格单元格的值是否为空。

代码如下，当我执行“dataGrid2_CellEditEnding(object sender, DataGridCellEditEndingEventArgs e)”时，我可以使用“(((TextBox)e.EditingElement).Text”，但不能用于以下内容。

    private void dataGrid2_BeginningEdit(object sender, DataGridBeginningEditEventArgs e)
    {
        int column = dataGrid2.CurrentCell.Column.DisplayIndex;
        int row = dataGrid2.SelectedIndex;

        if (((TextBox)e.EditingElement).Text == null)
            return;

非常感谢

Answer 1

我想这会对你有所帮助......

    private void DataGrid_BeginningEdit(
        object sender,
        Microsoft.Windows.Controls.DataGridBeginningEditEventArgs e)
    {
        e.Cancel = GetCellValue(((DataGrid) sender).CurrentCell) == null;
    }

    private static object GetCellValue(DataGridCellInfo cell)
    {
        var boundItem = cell.Item;
        var binding = new Binding();
        if (cell.Column is DataGridTextColumn)
        {
            binding
              = ((DataGridTextColumn)cell.Column).Binding
                    as Binding;
        }
        else if (cell.Column is DataGridCheckBoxColumn)
        {
            binding
              = ((DataGridCheckBoxColumn)cell.Column).Binding
                    as Binding;
        }
        else if (cell.Column is DataGridComboBoxColumn)
        {
            binding
                = ((DataGridComboBoxColumn)cell.Column).SelectedValueBinding
                     as Binding;

            if (binding == null)
            {
                binding
                  = ((DataGridComboBoxColumn)cell.Column).SelectedItemBinding
                       as Binding;
            }
        }

        if (binding != null)
        {
            var propertyName = binding.Path.Path;
            var propInfo = boundItem.GetType().GetProperty(propertyName);
            return propInfo.GetValue(boundItem, new object[] {});
        }

        return null;
    }

Answer 2

我发现了一种不同的方法：

ContentPresenter cp = (ContentPresenter)e.Column.GetCellContent(e.Row);
YourDataType item = (YourDataType)cp.DataContext;

Answer 3

试试这个 -

(e.EditingEventArgs.Source as TextBlock).Text

Answer 4

var row = e.Row.Item as DataRowView;
var value = row["ColumnName"];
//now you can do whatever you want with the value

Answer 5

 private void dataGrid2_CellBeginEdit(object sender, DataGridViewCellCancelEventArgs e)
        {
            if (dataGrid2[e.ColumnIndex, e.RowIndex].Value == null)
                {}
        }

Answer 6

如果您查看 DataGridBeginningEditEventArgs，它们包含属性 Column 和 Row，您可以使用它们从数据网格中选择单元格。

Answer 7

这比其他一些工作答案简单得多：

    private void DataGrid_BeginningEdit(object sender, DataGridBeginningEditEventArgs e)
    {
        string content = (e.EditingEventArgs.Source as TextBlock).Text;

        if (String.IsNullOrEmpty(content))
            e.Cancel = true;
    }