protected override void Paint(System.Drawing.Graphics graphics, System.Drawing.Rectangle clipBounds, System.Drawing.Rectangle cellBounds, int rowIndex, DataGridViewElementStates cellState, object value, object formattedValue, string errorText, DataGridViewCellStyle cellStyle, DataGridViewAdvancedBorderStyle advancedBorderStyle, DataGridViewPaintParts paintParts)
{
if (_ownerCell != null && _ownerCell.DataGridView == null)
{
_ownerCell = null; //owner cell was removed.
}
if (this.DataGridView == null || (_ownerCell == null && _columnSpan == 1 && _rowSpan == 1))
{
base.Paint(graphics, clipBounds, cellBounds, rowIndex, cellState, value, formattedValue, errorText, cellStyle, advancedBorderStyle, paintParts);
return;
}
ExDataGridViewTextBoxCell ownerCell = this;
int columnIndex = this.ColumnIndex;
int columnSpan = _columnSpan;
int rowSpan = _rowSpan;
if (_ownerCell != null)
{
ownerCell = _ownerCell;
columnIndex = _ownerCell.ColumnIndex;
rowIndex = _ownerCell.RowIndex;
columnSpan = _ownerCell.ColumnSpan;
rowSpan = _ownerCell.RowSpan;
value = _ownerCell.GetValue(rowIndex);
errorText = _ownerCell.GetErrorText(rowIndex);
cellState = _ownerCell.State;
cellStyle = _ownerCell.GetInheritedStyle(null, rowIndex, true);
formattedValue = _ownerCell.GetFormattedValue(value, rowIndex, ref cellStyle, null, null, DataGridViewDataErrorContexts.Display);
}
if (CellsRegionContainsSelectedCell(columnIndex, rowIndex, columnSpan, rowSpan))
{
cellState |= DataGridViewElementStates.Selected;
}
cellBounds = GetSpannedCellBoundsFromChildCellBounds(this, cellBounds);
clipBounds = GetSpannedCellClipBounds(ownerCell, cellBounds);
using (Graphics g = this.DataGridView.CreateGraphics())
{
g.SetClip(clipBounds);
//Paint the content.
ownerCell.InternalPaint(g, clipBounds, cellBounds, rowIndex, cellState,
value, formattedValue, errorText,
cellStyle, advancedBorderStyle,
paintParts & ~DataGridViewPaintParts.Border);
//Paint the borders.
if ((paintParts & DataGridViewPaintParts.Border) != DataGridViewPaintParts.None)
{
ExDataGridViewTextBoxCell leftTopCell = ownerCell;
DataGridViewAdvancedBorderStyle advancedBorderStyle2 = new DataGridViewAdvancedBorderStyle();
advancedBorderStyle2.Left = advancedBorderStyle.Left;
advancedBorderStyle2.Top = advancedBorderStyle.Top;
advancedBorderStyle2.Right = DataGridViewAdvancedCellBorderStyle.None;
advancedBorderStyle2.Bottom = DataGridViewAdvancedCellBorderStyle.None;
leftTopCell.PaintBorder(g, clipBounds, cellBounds, cellStyle, advancedBorderStyle2);
ExDataGridViewTextBoxCell rightBottomCell = DataGridView[columnIndex + columnSpan - 1, rowIndex + rowSpan - 1] as ExDataGridViewTextBoxCell;
if (rightBottomCell == null)
{
rightBottomCell = this;
}
DataGridViewAdvancedBorderStyle advancedBorderStyle3 = new DataGridViewAdvancedBorderStyle();
advancedBorderStyle3.Left = DataGridViewAdvancedCellBorderStyle.None;
advancedBorderStyle3.Top = DataGridViewAdvancedCellBorderStyle.None;
advancedBorderStyle3.Right = advancedBorderStyle.Right;
advancedBorderStyle3.Bottom = advancedBorderStyle.Bottom;
rightBottomCell.PaintBorder(g, clipBounds, cellBounds, cellStyle, advancedBorderStyle3);
}
}
}
