06. WPF DataGridViewHelper

데이터그리드 정보 가져오는 헬퍼

public static class DataGridViewHelper
    {
        public static DataGridCell GetCell(DataGrid dg, int row, int column)
        {
            DataGridRow rowContainer = GetRow(dg, row);

            if (rowContainer != null)
            {
                DataGridCellsPresenter presenter = GetVisualChild<DataGridCellsPresenter>(rowContainer);

                DataGridCell cell = (DataGridCell)presenter.ItemContainerGenerator.ContainerFromIndex(column);  // <<<------ ERROR
                if (cell == null)
                {
                    // now try to bring into view and retreive the cell
                    dg.ScrollIntoView(rowContainer, dg.Columns[column]);
                    cell = (DataGridCell)presenter.ItemContainerGenerator.ContainerFromIndex(column);
                }
                return cell;
            }
            return null;
        }

        public static DataGridRow GetRow(DataGrid dg, int index)
        {
            DataGridRow row = (DataGridRow)dg.ItemContainerGenerator.ContainerFromIndex(index);
            if (row == null)
            {
                // may be virtualized, bring into view and try again
                dg.ScrollIntoView(dg.Items[index]);
                row = (DataGridRow)dg.ItemContainerGenerator.ContainerFromIndex(index);
            }
            return row;
        }

        public static T GetVisualChild<T>(Visual parent) where T : Visual
        {
            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;
        }
    }

 

사용법

DataGridCell cell = DataGridViewHelper.GetCell(grid, rowIndex, cellIndex);

DataGridRow row = DataGridViewHelper.GetRow(grid, rowIndex);