// Create a StringFormat object with the each line of text, and the block
　　// of text centered on the page.
　　StringFormat stringFormat = new StringFormat();
　　stringFormat.Alignment = StringAlignment.Center;
　　stringFormat.LineAlignment = StringAlignment.Center;

　　// Draw the text and the surrounding rectangle.
　　e.Graphics.DrawString(text1, font1, Brushes.Blue, rect1, stringFormat);
　　e.Graphics.DrawRectangle(Pens.Black, rect1);
}