我就想获取某行某列的文本,本来在winform中很简单的,却发现在wpf中还挺不好做，也许是我还没找到简单的实现。

 ///         /// 获取单元格文字
        ///         ///         ///         ///         public static string GetCellIndex(DataGrid dataGrid1, int rowIndex, int columnIndex)
        {
            if (dataGrid1 == null)
            {
                return null;
            }

            DataGridRow rowContainer = (DataGridRow)dataGrid1.ItemContainerGenerator.ContainerFromIndex(rowIndex);
            DataGridCellsPresenter presenter = GetVisualChild(rowContainer);
            if (presenter == null)
            {
                return null;
            }

            DataGridCell cell = (DataGridCell)presenter.ItemContainerGenerator.ContainerFromIndex(columnIndex);
            if (cell == null)
            {
                dataGrid1.ScrollIntoView(rowContainer, dataGrid1.Columns[columnIndex]);
                cell = (DataGridCell)presenter.ItemContainerGenerator.ContainerFromIndex(columnIndex);
            }

            string text = cell.ToString();
            if (Regex.IsMatch(text, ".+?:(.+)"))
            {
                text = Regex.Match(text, ".+?:(.+)").Groups[1].Value;

                return text;
            }

            return null;
        }

        private static T GetVisualChild(Visual parent) where T : Visual
        {
            if (parent == null)
            {
                return null;
            }
            T child = default(T);
            int numVisuals = VisualTreeHelper.GetChildrenCount(parent);
            for (int i = 0; i < numVisuals; i++)
            {
                Visual v = (Visual)VisualTreeHelper.GetChild(parent, i);
                child = v as T;
                if (child == null)
                {
                    child = GetVisualChild(v);
                }

                else
                {
                    break;
                }
            }

            return child;
        }