c#复制图片到粘贴板

        string fielN;
        private void button1_Click(object sender, EventArgs e) {
            OpenFileDialog saveFileDialog1 = new OpenFileDialog();
            saveFileDialog1.Filter = "JPG files(*.JPG)|*.JPG|All files(*.*)|*.*";
            saveFileDialog1.RestoreDirectory = true;
            //saveFileDialog1.FileName = DefaultFileName;
            fielN  = string.Empty;
            if (saveFileDialog1.ShowDialog() == DialogResult.OK) {
                //获得文件路径
                fielN = saveFileDialog1.FileName.ToString();
                this.pictureBox1.Image = Image.FromFile(fielN);
            }
        }

        private void button2_Click(object sender, EventArgs e) {
            //string file = @"C:\" + Guid.NewGuid().ToString("N") + ".JPG";
            //this.pictureBox1.Image.Save(fielN);
            Image img = Image.FromFile(fielN);
            Clipboard.SetImage(img);
        }