winform label文本转换为图片 、Picturebox+label合并转换为图片

  public Form1()
         {
             InitializeComponent();
             //label存入Picturebox
             pictureBox1.Controls.Add(label1);
             pictureBox1.Controls.Add(label2);
         }

         private void button1_Click(object sender, EventArgs e)
         {
             //Picturebox+label合并转换成图片
             foreach (Label l in pictureBox1.Controls)
             {

                 using (Brush brush = new SolidBrush(l.ForeColor))
                 using (Graphics g = Graphics.FromImage(pictureBox1.Image))
                 {
                     Rectangle rect = new Rectangle(l.Left - pictureBox1.Left, l.Top - pictureBox1.Top, l.Width, l.Height);
                     if (l.BackColor != Color.Transparent)
                     {
                         using (Brush bgBrush = new SolidBrush(l.BackColor))
                         {
                             g.FillRectangle(bgBrush, rect);
                         }
                     }
                     g.DrawString(l.Text, l.Font, brush, rect, StringFormat.GenericTypographic);
                 }
             }
             pictureBox1.Image.Save("d:\\abc.png", System.Drawing.Imaging.ImageFormat.Png);

             //文字转换成图片
             //string str =label1.Text;
             //Graphics g = Graphics.FromImage(new Bitmap(1, 1));
             //Font font = new Font("宋体", 9);
             //SizeF sizeF = g.MeasureString(str, font); //测量出字体的高度和宽度
             //Brush brush; //笔刷，颜色
             //brush = new SolidBrush(label1.ForeColor);
             //PointF pf = new PointF(0, 0);
             //Bitmap img = new Bitmap(Convert.ToInt32(sizeF.Width), Convert.ToInt32(sizeF.Height));
             //g = Graphics.FromImage(img);
             //g.DrawString(str, font, brush, pf);
             ////输出图片
             //img.Save("d://123.jpg", System.Drawing.Imaging.ImageFormat.Gif);

         }