Drawing a filled circle or rectangle inside a DataGridViewCell in C# Winforms

Question

I want to draw a small filled circle in the center of a DataGridViewCell. A rectangle can do the trick as well. I assume I must do it in the CellPainting event.

Answer 1

Thank's for your question and answer @Andres .

Please see my response : (for example) I have a datagridview with 2 columns. In column first I want display a color circle that color of it is write(color name) in column 2. for this my code is :

for (int i = 1; i <= 5; i++)
    Dgv.Rows.Add();
Dgv[1, 0].Value = "Red";
Dgv[1, 1].Value = "Blue";
Dgv[1, 2].Value = "Yellow";
Dgv[1, 3].Value = "Green";
Dgv[1, 4].Value = "Black";

For create a circle I write this class code:

public static class GraphicsExtensions
{
    public static void FillCircle(this Graphics g, Brush brush, float centerX, float centerY, float radius)
    {
        g.FillEllipse(brush, centerX - radius, centerY - radius, radius + radius, radius + radius);
    }
}

In CellPainting event of my datagridview, write this code :

private void Dgv_CellPainting(object sender, DataGridViewCellPaintingEventArgs e)
{
    if (e.ColumnIndex == 0 && e.RowIndex > -1)
    {
        Brush Brs= new SolidBrush(Color.FromName(Dgv[1, e.RowIndex].Value.ToString()));
        GraphicsExtensions.FillCircle(e.Graphics, Brs, e.CellBounds.Location.X + 5, e.CellBounds.Location.Y + 10, 5);
        e.Handled = true;                
    }
}

Result is datagridview with 2 columns :

column 1 : 6 circle with 6 specific color

column 2 : 6 color name

Thanks.