Save picturebox with labels in it as JPEG in C#

Question

I'm new to C# and Windows Forms and I would like to save a PictureBox with labels in it in JPEG format.

This is my code so far:

SaveFileDialog sfd = new SaveFileDialog();
sfd.Filter = "JPG(*.JPG)|*.jpg";  
if(sfd.ShowDialog() == DialogResult.OK)
{
    pictureBox1.Image.Save(sfd.FileName, 
System.Drawing.Imaging.ImageFormat.Jpeg);
}

There are labels in the picturebox, but they are not saved as well. Do you have any idea?

Answer 1

The most simple option is adding those labels to PictureBox control. Then using DrawToBitmap you can draw those labels and the image to a bitmap:

var bm = new Bitmap(pictureBox1.Width, pictureBox1.Height);
pictureBox1.DrawToBitmap(bm, new Rectangle(0,0,pictureBox1.Width, pictureBox1.Height));

Then save the bitmap in any format which you need.

Note 1: Don't forget to dispose the bitmap if you don't need it after saving.

Note 2: DrawBitmap draws the labels just if you add them to the Controls collection of the PictureBox:

var label1 = new Label() { 
    Text = "Some Text",
    BackColor = Color.Transparent,
    Location = new Point(10, 10)
};
pictureBox1.Controls.Add(label1);