Bitmap bmp;

        /// <summary>

        /// 绘制图像

        /// </summary>

        /// <param name="g">Graphics</param>

        /// <param name="Width">图像宽</param>

        /// <param name="Height">图像高</param>

        /// <param name="ScaleX">缩放X</param>

        /// <param name="ScaleY">缩放Y</param>

        public void DrawImage(Graphics g,Bitmap bitmap, int Width, int Height, float ScaleX = 1, float ScaleY = 1)

        {

            if (bitmap != null)

            {

                if (bmp == null)

                {

                    bmp = new Bitmap(Width, Height);

                }

                g = Graphics.FromImage(bmp);

                picturebox.BeginInvoke(new Action(() =>

                {

                    this.picturebox.Image = bmp;

                }));

                g.DrawImage(bitmap, 0, 0, Width * ScaleX, Height * ScaleY);

            }

        }