第一步先新建一個基類，完整程式碼如下

    public class GraphicsText
    {
        private Graphics _graphics;

        public GraphicsText()
        {

        }

        public Graphics Graphics
        {
            get { return _graphics; }
            set { _graphics = value; }
        }

        /// <summary>  
        /// 繪製根據矩形旋轉文字  
        /// </summary>  
        /// <param name="s">文字</param>  
        /// <param name="font">字型</param>  
        /// <param name="brush">填充</param>  
        /// <param name="layoutRectangle">區域性矩形</param>  
        /// <param name="format">佈局方式</param>  
        /// <param name="angle">角度</param>  
        public void DrawString(string s, Font font, Brush brush, RectangleF layoutRectangle, StringFormat format, float angle)
        {
            // 求取字串大小  
            SizeF size = _graphics.MeasureString(s, font);

            // 根據旋轉角度，求取旋轉後字串大小  
            SizeF sizeRotate = ConvertSize(size, angle);

            // 根據旋轉後尺寸、佈局矩形、佈局方式計算文字旋轉點  
            PointF rotatePt = GetRotatePoint(sizeRotate, layoutRectangle, format);

            // 重設佈局方式都為Center  
            StringFormat newFormat = new StringFormat(format);
            newFormat.Alignment = StringAlignment.Center;
            newFormat.LineAlignment = StringAlignment.Center;

            // 繪製旋轉後文本  
            DrawString(s, font, brush, rotatePt, newFormat, angle);
        }

        /// <summary>  
        /// 繪製根據點旋轉文字，一般旋轉點給定位文字包圍盒中心點  
        /// </summary>  
        /// <param name="s">文字</param>  
        /// <param name="font">字型</param>  
        /// <param name="brush">填充</param>  
        /// <param name="point">旋轉點</param>  
        /// <param name="format">佈局方式</param>  
        /// <param name="angle">角度</param>  
        public void DrawString(string s, Font font, Brush brush, PointF point, StringFormat format, float angle)
        {
            // Save the matrix  
            Matrix mtxSave = _graphics.Transform;

            Matrix mtxRotate = _graphics.Transform;
            mtxRotate.RotateAt(angle, point);
            _graphics.Transform = mtxRotate;

            _graphics.DrawString(s, font, brush, point, format);

            // Reset the matrix  
            _graphics.Transform = mtxSave;
        }

        private SizeF ConvertSize(SizeF size, float angle)
        {
            Matrix matrix = new Matrix();
            matrix.Rotate(angle);

            // 旋轉矩形四個頂點  
            PointF[] pts = new PointF[4];
            pts[0].X = -size.Width / 2f;
            pts[0].Y = -size.Height / 2f;
            pts[1].X = -size.Width / 2f;
            pts[1].Y = size.Height / 2f;
            pts[2].X = size.Width / 2f;
            pts[2].Y = size.Height / 2f;
            pts[3].X = size.Width / 2f;
            pts[3].Y = -size.Height / 2f;
            matrix.TransformPoints(pts);

            // 求取四個頂點的包圍盒  
            float left = float.MaxValue;
            float right = float.MinValue;
            float top = float.MaxValue;
            float bottom = float.MinValue;

            foreach (PointF pt in pts)
            {
                // 求取並集  
                if (pt.X < left)
                    left = pt.X;
                if (pt.X > right)
                    right = pt.X;
                if (pt.Y < top)
                    top = pt.Y;
                if (pt.Y > bottom)
                    bottom = pt.Y;
            }

            SizeF result = new SizeF(right - left, bottom - top);
            return result;
        }

        private PointF GetRotatePoint(SizeF size, RectangleF layoutRectangle, StringFormat format)
        {
            PointF pt = new PointF();

            switch (format.Alignment)
            {
                case StringAlignment.Near:
                    pt.X = layoutRectangle.Left + size.Width / 2f;
                    break;
                case StringAlignment.Center:
                    pt.X = (layoutRectangle.Left + layoutRectangle.Right) / 2f;
                    break;
                case StringAlignment.Far:
                    pt.X = layoutRectangle.Right - size.Width / 2f;
                    break;
                default:
                    break;
            }

            switch (format.LineAlignment)
            {
                case StringAlignment.Near:
                    pt.Y = layoutRectangle.Top + size.Height / 2f;
                    break;
                case StringAlignment.Center:
                    pt.Y = (layoutRectangle.Top + layoutRectangle.Bottom) / 2f;
                    break;
                case StringAlignment.Far:
                    pt.Y = layoutRectangle.Bottom - size.Height / 2f;
                    break;
                default:
                    break;
            }

            return pt;
        }
    }
 

第二步，新建一個窗體

    public partial class Form1 : Form
    {
        private Font _font = new Font("Arial", 12);  
        private Brush _brush = new SolidBrush(Color.Black);  
        private Pen _pen = new Pen(Color.Black, 1f);  
        private string _text = "Crow Soft";

        public Form1()  
        {  
            InitializeComponent();  
        }  
  
        protected override void OnPaint(PaintEventArgs e)  
        {  
            base.OnPaint(e);  
  
            GraphicsText graphicsText = new GraphicsText();  
            graphicsText.Graphics = e.Graphics;  
  
            // 繪製圍繞點旋轉的文字  
            StringFormat format = new StringFormat();  
            format.Alignment = StringAlignment.Center;  
            format.LineAlignment = StringAlignment.Center;  
  
            graphicsText.DrawString(_text, _font, _brush, new PointF(100, 80), format, 45f);  
            graphicsText.DrawString(_text, _font, _brush, new PointF(200, 80), format, -45f);  
            graphicsText.DrawString(_text, _font, _brush, new PointF(300, 80), format, 90f);  
            graphicsText.DrawString(_text, _font, _brush, new PointF(400, 80), format, -60f);  
  
            // 繪製矩形內旋轉的文字  
            // First line  
            RectangleF rc = RectangleF.FromLTRB(50, 150, 200, 230);  
            RectangleF rect = rc;  
            format.Alignment = StringAlignment.Near;  
  
            e.Graphics.DrawRectangle(_pen, rect.Left, rect.Top, rect.Width, rect.Height);  
            graphicsText.DrawString(_text, _font, _brush, rect, format, 30);  
  
            rect.Location += new SizeF(180, 0);  
            format.LineAlignment = StringAlignment.Near;  
            e.Graphics.DrawRectangle(_pen, rect.Left, rect.Top, rect.Width, rect.Height);  
            graphicsText.DrawString(_text, _font, _brush, rect, format, -30);  
  
            rect.Location += new SizeF(180, 0);  
            format.LineAlignment = StringAlignment.Center;  
            e.Graphics.DrawRectangle(_pen, rect.Left, rect.Top, rect.Width, rect.Height);  
            graphicsText.DrawString(_text, _font, _brush, rect, format, -90);  
  
            rect.Location += new SizeF(180, 0);  
            format.LineAlignment = StringAlignment.Far;  
            e.Graphics.DrawRectangle(_pen, rect.Left, rect.Top, rect.Width, rect.Height);  
            graphicsText.DrawString(_text, _font, _brush, rect, format, 70);  
  
            // Second line  
            rect = rc;  
            rect.Location += new SizeF(0, 100);  
            format.Alignment = StringAlignment.Center;  
  
            e.Graphics.DrawRectangle(_pen, rect.Left, rect.Top, rect.Width, rect.Height);  
            graphicsText.DrawString(_text, _font, _brush, rect, format, 40);  
  
            rect.Location += new SizeF(180, 0);  
            format.LineAlignment = StringAlignment.Near;  
            e.Graphics.DrawRectangle(_pen, rect.Left, rect.Top, rect.Width, rect.Height);  
            graphicsText.DrawString(_text, _font, _brush, rect, format, 30);  
  
            rect.Location += new SizeF(180, 0);  
            format.LineAlignment = StringAlignment.Center;  
            e.Graphics.DrawRectangle(_pen, rect.Left, rect.Top, rect.Width, rect.Height);  
            graphicsText.DrawString(_text, _font, _brush, rect, format, -70);  
  
            rect.Location += new SizeF(180, 0);  
            format.LineAlignment = StringAlignment.Far;  
            e.Graphics.DrawRectangle(_pen, rect.Left, rect.Top, rect.Width, rect.Height);  
            graphicsText.DrawString(_text, _font, _brush, rect, format, 60);  
  
            // Third line  
            rect = rc;  
            rect.Location += new SizeF(0, 200);  
            format.Alignment = StringAlignment.Far;  
  
            e.Graphics.DrawRectangle(_pen, rect.Left, rect.Top, rect.Width, rect.Height);  
            graphicsText.DrawString(_text, _font, _brush, rect, format, -30);  
  
            rect.Location += new SizeF(180, 0);  
            format.LineAlignment = StringAlignment.Near;  
            e.Graphics.DrawRectangle(_pen, rect.Left, rect.Top, rect.Width, rect.Height);  
            graphicsText.DrawString(_text, _font, _brush, rect, format, -30);  
  
            rect.Location += new SizeF(180, 0);  
            format.LineAlignment = StringAlignment.Center;  
            e.Graphics.DrawRectangle(_pen, rect.Left, rect.Top, rect.Width, rect.Height);  
            graphicsText.DrawString(_text, _font, _brush, rect, format, 90);  
  
            rect.Location += new SizeF(180, 0);  
            format.LineAlignment = StringAlignment.Far;  
            e.Graphics.DrawRectangle(_pen, rect.Left, rect.Top, rect.Width, rect.Height);  
            graphicsText.DrawString(_text, _font, _brush, rect, format, 45);  
        }  
    }
 

這就大功告成了，執行效果如下：

讀者可以根據需求更改旋轉角度、字型大小、顏色等