用 XML 文件持久化和恢复图片信息

// 保存图片到 XML 文件


private void Form1_Load(object sender, System.EventArgs e)






{


Image img = Image.FromFile(@"E:/MyDocs/My Pictures/样品.jpg");


System.IO.MemoryStream stream = new System.IO.MemoryStream();


img.Save(stream, ImageFormat.Jpeg);


byte[] b = stream.GetBuffer();


string s = Convert.ToBase64String(b);




XmlDocument doc = new XmlDocument();


doc.AppendChild(doc.CreateElement("image"));


XmlElement elmtData = doc.CreateElement("data");


elmtData.InnerText = s;


doc.DocumentElement.AppendChild(elmtData);


doc.Save("test.xml");


}




// 从 XML 文件中读取图片信息


private void button1_Click(object sender, System.EventArgs e)






{


XmlDocument doc = new XmlDocument();


doc.Load("test.xml");


string s = doc.DocumentElement.SelectSingleNode("data").InnerText;


byte[] b = Convert.FromBase64String(s);


MemoryStream stream = new MemoryStream(b);


Bitmap bitmap = new Bitmap(stream);




this.pictureBox1.Image = bitmap;


}