C#实现字体旋转的方法

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Drawing.Drawing2D;
namespace advanced_drawing
{
  public partial class Form6 : Form
  {
    public Form6()
    {
      InitializeComponent();
    }
    private void button1_Click(object sender, EventArgs e)
    {
      for (int i = 0; i <= 90; i += 10)
      {
        Matrix matrix = new Matrix();
        matrix.Rotate(i);
        Graphics g = this.CreateGraphics();
        g.Transform = matrix;
        g.DrawLine(Pens.Blue, 0, 0, 250, 0);
        g.DrawString("zhuzhao", this.Font, Brushes.Blue, new RectangleF(250, 0, 100, 100));
      }
    }
  }
}