Small issues with the WPF DataGrid

Small issues with the WPF DataGrid

1) when using the WPF DataGrid, although the mode used when binding data is twoway,

However, in actual use, the transmission of data has a certain delay because the interface input is too fast.
This will sometimes cause exceptions. To solve this problem, we can call the function DataGrid. commiteedit ();
To manually transmit data.
2) some information, such as the number of rows, is not updated in time on the interface after the data is input, and after a row is deleted,
The number of rows is not rearranged. You only need to use repeated IR. Items. Refresh (); to refresh the interface.

3) Obtain a row or cell in the DataGrid

        #region DataGrid Cell Row        /// <summary>        /// get the row of datagrid        /// </summary>        /// <param name="Index"></param>  [0,n-1]        /// <returns>DataGridRow</returns>         private DataGridRow getRow(int Index)        {            try            {                DataGridRow row = (DataGridRow)dataGrid.ItemContainerGenerator.ContainerFromIndex(Index);                if (row == null)                {                    dataGrid.UpdateLayout();                    dataGrid.ScrollIntoView(dataGrid.Items[Index]);                    row = (DataGridRow)dataGrid.ItemContainerGenerator.ContainerFromIndex(Index);                }                return row;            }            catch (Exception ex)            {                log.Error("getRow()----- exception occurred," + ex.Message);                return null;            }        }         /// <summary>        /// get the cell of dataGrid by an existing row        /// </summary>        /// <param name="rowIndex"></param>  [0,n-1]        /// <param name="columnIndex"></param>  [0,n-1]        /// <returns>DataGridCell</returns>        private DataGridCell getCell(int rowIndex, int columnIndex)        {            try            {                DataGridRow rowContainer = getRow(rowIndex);                               if (rowContainer != null)                {                    DataGridCellsPresenter presenter = getVisualChild<DataGridCellsPresenter>(rowContainer);                                        if (presenter == null)                    {                        dataGrid.ScrollIntoView(rowContainer, dataGrid.Columns[columnIndex]);                        presenter = getVisualChild<DataGridCellsPresenter>(rowContainer);                    }                                        DataGridCell cell = (DataGridCell)presenter.ItemContainerGenerator.ContainerFromIndex(columnIndex);                    if (cell == null)                    {                        dataGrid.ScrollIntoView(rowContainer, dataGrid.Columns[columnIndex]);                        cell = (DataGridCell)presenter.ItemContainerGenerator.ContainerFromIndex(columnIndex);                    }                    return cell;                } // end of if (rowContainer != null)            }            catch (Exception ex)            {                log.Error("getCell()---- exception occurred, " + ex.Message);            }            return null;        }        /// <summary>        /// get the visual child        /// </summary>        /// <typeparam name="T"></typeparam>        /// <param name="parent"></param>        /// <returns></returns>        private static T getVisualChild<T>(Visual parent) where T : Visual        {            try            {                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<T>(v);                    }                    if (child != null)                    {                        break;                    }                }                return child;            }            catch (Exception ex)            {                log.Error("getVisualChild()---- exception occurred, " + ex.Message);                return null;            }        }        #endregion