How to save a picturebox control as a jpeg file after it's edited

Question

I have a PictureBox on my Windows Forms application.

I load a picture in it and I have enabled the Paint event in my code. It draws a recta

Answer 1

Here is my solution with additional support to various file types:

    public void ExportToBmp(string path)
    {
        using(var bitmap = new Bitmap(pictureBox.Width, pictureBox.Height))
        {
        pictureBox.DrawToBitmap(bitmap, pictureBox.ClientRectangle);
        ImageFormat imageFormat = null;

        var extension = Path.GetExtension(path);
        switch (extension)
        {
            case ".bmp":
                imageFormat = ImageFormat.Bmp;
                break;
            case ".png":
                imageFormat = ImageFormat.Png;
                break;
            case ".jpeg":
            case ".jpg":
                imageFormat = ImageFormat.Jpeg;
                break;
            case ".gif":
                imageFormat = ImageFormat.Gif;
                break;
            default:
                throw new NotSupportedException("File extension is not supported");
        }

        bitmap.Save(path, imageFormat);
        }
    }