public static DataGridViewAdvancedBorderStyle AdjustCellBorderStyle <TCell>(TCell cell)
            where TCell : DataGridViewCell, ISpannedCell
        {
            var dataGridViewAdvancedBorderStylePlaceholder = new DataGridViewAdvancedBorderStyle();
            var dataGridView = cell.DataGridView;

            return(cell.AdjustCellBorderStyle(
                       dataGridView.AdvancedCellBorderStyle,
                       dataGridViewAdvancedBorderStylePlaceholder,
                       DataGridViewHelper.SingleVerticalBorderAdded(dataGridView),
                       DataGridViewHelper.SingleHorizontalBorderAdded(dataGridView),
                       InFirstDisplayedColumn(cell),
                       InFirstDisplayedRow(cell)));
        }
Exemple #2
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        protected override void Paint(Graphics graphics, Rectangle clipBounds, Rectangle cellBounds, int rowIndex, DataGridViewElementStates cellState, object value, object formattedValue, string errorText, DataGridViewCellStyle cellStyle, DataGridViewAdvancedBorderStyle advancedBorderStyle, DataGridViewPaintParts paintParts)
        {
            if (m_OwnerCell != null && m_OwnerCell.DataGridView == null)
            {
                m_OwnerCell = null; //owner cell was removed.
            }
            if (DataGridView == null ||
                (m_OwnerCell == null && m_ColumnSpan == 1 && m_RowSpan == 1))
            {
                base.Paint(graphics, clipBounds, cellBounds, rowIndex, cellState, value, formattedValue, errorText, cellStyle, advancedBorderStyle,
                           paintParts);
                return;
            }

            var ownerCell   = this;
            var columnIndex = ColumnIndex;
            var columnSpan  = m_ColumnSpan;
            var rowSpan     = m_RowSpan;

            if (m_OwnerCell != null)
            {
                ownerCell      = m_OwnerCell;
                columnIndex    = m_OwnerCell.ColumnIndex;
                rowIndex       = m_OwnerCell.RowIndex;
                columnSpan     = m_OwnerCell.ColumnSpan;
                rowSpan        = m_OwnerCell.RowSpan;
                value          = m_OwnerCell.GetValue(rowIndex);
                errorText      = m_OwnerCell.GetErrorText(rowIndex);
                cellState      = m_OwnerCell.State;
                cellStyle      = m_OwnerCell.GetInheritedStyle(null, rowIndex, true);
                formattedValue = m_OwnerCell.GetFormattedValue(value,
                                                               rowIndex, ref cellStyle, null, null, DataGridViewDataErrorContexts.Display);
            }
            if (CellsRegionContainsSelectedCell(columnIndex, rowIndex, columnSpan, rowSpan))
            {
                cellState |= DataGridViewElementStates.Selected;
            }

            var cellBounds2 = DataGridViewCellExHelper.GetSpannedCellBoundsFromChildCellBounds(
                this,
                cellBounds,
                DataGridViewHelper.SingleVerticalBorderAdded(DataGridView),
                DataGridViewHelper.SingleHorizontalBorderAdded(DataGridView));

            clipBounds = DataGridViewCellExHelper.GetSpannedCellClipBounds(ownerCell, cellBounds2,
                                                                           DataGridViewHelper.SingleVerticalBorderAdded(DataGridView),
                                                                           DataGridViewHelper.SingleHorizontalBorderAdded(DataGridView));
            using (var g = DataGridView.CreateGraphics())
            {
                g.SetClip(clipBounds);
                //Paint the content.
                advancedBorderStyle = DataGridViewCellExHelper.AdjustCellBorderStyle(ownerCell);
                ownerCell.NativePaint(g, clipBounds, cellBounds2, rowIndex, cellState,
                                      value, formattedValue, errorText,
                                      cellStyle, advancedBorderStyle,
                                      paintParts & ~DataGridViewPaintParts.Border);
                //Paint the borders.
                if ((paintParts & DataGridViewPaintParts.Border) != DataGridViewPaintParts.None)
                {
                    var leftTopCell          = ownerCell;
                    var advancedBorderStyle2 = new DataGridViewAdvancedBorderStyle
                    {
                        Left   = advancedBorderStyle.Left,
                        Top    = advancedBorderStyle.Top,
                        Right  = DataGridViewAdvancedCellBorderStyle.None,
                        Bottom = DataGridViewAdvancedCellBorderStyle.None
                    };
                    leftTopCell.PaintBorder(g, clipBounds, cellBounds2, cellStyle, advancedBorderStyle2);

                    var rightBottomCell = DataGridView[columnIndex + columnSpan - 1, rowIndex + rowSpan - 1] as DataGridViewTextBoxCellEx
                                          ?? this;
                    var advancedBorderStyle3 = new DataGridViewAdvancedBorderStyle
                    {
                        Left   = DataGridViewAdvancedCellBorderStyle.None,
                        Top    = DataGridViewAdvancedCellBorderStyle.None,
                        Right  = advancedBorderStyle.Right,
                        Bottom = advancedBorderStyle.Bottom
                    };
                    rightBottomCell.PaintBorder(g, clipBounds, cellBounds2, cellStyle, advancedBorderStyle3);
                }
            }
        }