private void DrawColumnDrag(PaintEventArgs e)
{
if (_columnDown != null && _currentX.HasValue && _currentY.HasValue && IsHoveringOnColumnCell)
{
int x1 = _currentX.Value - (_columnDown.Width.Value / 2);
int y1 = _currentY.Value - (CellHeight / 2);
int x2 = x1 + _columnDown.Width.Value;
int y2 = y1 + CellHeight;
Gdi.SetSolidPen(_backColor);
Gdi.DrawRectangle(x1, y1, x2, y2);
Gdi.PrepDrawString(NormalFont, _foreColor);
Gdi.DrawString(_columnDown.Text, new Point(x1 + CellWidthPadding, y1 + CellHeightPadding));
}
}