protected override void Paint(Graphics graphics, Rectangle clipBounds, Rectangle cellBounds, int rowIndex, DataGridViewElementStates elementState, object value, object formattedValue, string errorText, DataGridViewCellStyle cellStyle, DataGridViewAdvancedBorderStyle advancedBorderStyle, DataGridViewPaintParts paintParts)
{
// Paint the default cell appearance.
DataGridViewCellStyle style = cellStyle;
base.Paint(graphics, clipBounds, cellBounds, rowIndex, elementState, value, formattedValue, errorText, style, advancedBorderStyle, paintParts);
// Paint the progress bar.
double progressValue = Convert.ToDouble(value);
double progressPercentage = progressValue / 100.0;
string progressStr = $"{progressValue:0.#}%";
Color outlineColor = BackgroundColor.AddShade(0.15f);
Color progressOutlineColor = ProgressColor.AddShade(0.15f);
// Paint the progress bar background.
Rectangle drawRect = new Rectangle(cellBounds.X + 2, cellBounds.Y + 2, cellBounds.Width - 4, cellBounds.Height - 4);
using (Brush brush = new SolidBrush(BackgroundColor))
graphics.FillRectangle(brush, drawRect);
using (Pen pen = new Pen(outlineColor))
graphics.DrawRectangle(pen, drawRect);
// Paint the progress bar foreground.
if (progressValue > 0)
{
Rectangle progressRect = new Rectangle(drawRect.X, drawRect.Y, Convert.ToInt32(progressPercentage * drawRect.Width), drawRect.Height);
using (Brush brush = new SolidBrush(ProgressColor))
graphics.FillRectangle(brush, progressRect);
using (Pen pen = new Pen(progressOutlineColor))
graphics.DrawRectangle(pen, progressRect);
}
// Paint the progress bar text.
if (ShowProgressPercentage)
{
bool isSelected = DataGridView.CurrentCell?.RowIndex == rowIndex;
Color textColor = TextColor == default ? (isSelected ? style.SelectionForeColor : style.ForeColor) : TextColor;
Font textFont = style.Font;
TextRenderer.DrawText(graphics, progressStr, textFont, drawRect, textColor, TextFormatFlags.HorizontalCenter | TextFormatFlags.VerticalCenter);
}
}