c# - 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 事件停止事件时，我正在尝试检查数据网格单元格的值是否为空。

代码如下，我可以在执行“dataGrid2_CellEditEnding(object sender, DataGridCellEditEndingEventArgs e)”时使用“(((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

我想这对你有帮助......

    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;
    }