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:/我的文檔/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);      }    }  }}