C#控制图像旋转和翻转的方法

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
namespace WindowsApplication2
{
  public partial class Form17 : Form
  {
    public Form17()
    {
      InitializeComponent();
    }
    private void button1_Click(object sender, EventArgs e)
    {
      using (Bitmap bmp = new Bitmap(@"d:/我的文档/桌面/ico/watermark.bmp"))
      {
        Graphics g = this.CreateGraphics();
        Rectangle rect = new Rectangle(0, 0, 100, 100);
        //bmp.RotateFlip(RotateFlipType.Rotate90FlipNone);
        bmp.RotateFlip(RotateFlipType.RotateNoneFlipX);
        g.DrawImage(bmp, rect);
      }
    }
  }
}