請儘量做到這樣,
this.Paint += new PaintEventHandler(dataGridView1_Click); //Call event while loading
private void dataGridView1_Click(object sender, PaintEventArgs e)
{
Font fnt = new Font("Arial", 10, FontStyle.Bold, GraphicsUnit.Point);
Rectangle rct1 = new Rectangle((dataGridView1.GetColumnDisplayRectangle(0, true).X), (dataGridView1.GetColumnDisplayRectangle(0, true).Y + dataGridView1.Columns[0].HeaderCell.ContentBounds.Height + 8), dataGridView1.GetColumnDisplayRectangle(0, true).Width - 1, (dataGridView1.GetRowDisplayRectangle((dataGridView1.Rows.Count - 1), true).Top - dataGridView1.GetRowDisplayRectangle((dataGridView1.Rows.Count - 1), true).Height));
// Create string to draw.
String drawString = "Sample Text";
// Create font and brush.
Font drawFont = new Font("Arial", 16);
SolidBrush drawBrush = new SolidBrush(Color.Black);
// Create point for upper-left corner of drawing.
float x = 150.0F;
float y = 50.0F;
// Set format of string.
StringFormat drawFormat = new StringFormat();
drawFormat.FormatFlags = StringFormatFlags.DirectionVertical;
// Draw string to screen.
e.Graphics.FillRectangle(Brushes.White, rct1);
e.Graphics.DrawString(drawString, drawFont, drawBrush, x, y, drawFormat);
Rectangle rct =new Rectangle();
rct = dataGridView1.GetRowDisplayRectangle(3, true)
rct.Height -= 1;
SizeF s =new SizeF();
s= e.Graphics.MeasureString("HORINZONTAL TEXT", dataGridView1.Font);
float lefts = (rct.Width/2) - (s.Width/2);
float tops = rct.Top + ((rct.Height/2) - (s.Height/2));
e.Graphics.FillRectangle(Brushes.White, rct);
e.Graphics.DrawString("HORINZONTAL TEXT", fnt, Brushes.Black, 2, tops);
}