读本地图像文件，在上面写一些文件，再传到ＷＷＷ服务器上

 

  public class ImgExtends

    {

        /// <summary>

        /// 像本地图像文件上写字，并上传本地服务器

        /// </summary>

        /// <param name="imgserverurl">Web服务器上的图片路径</param>

        /// <param name="title">图片上的文字</param>

        /// <returns></returns>

        public static string GetImg(string imgserverurl, string title)

        {

            try

            {

                if (!string.IsNullOrEmpty(imgserverurl))

                {

                    string Path = System.Web.HttpContext.Current.Server.MapPath("/Upload/Product");

                    string FileName = "\\" + VCommons.Utils.GetNewGuid() + ".jpg";

 

                    Image img = Image.FromFile(imgserverurl);

                    int width = img.Width;

                    int height = img.Height;

 

                    Bitmap bitmap = new Bitmap(width, height, PixelFormat.Format24bppRgb);

                    bitmap.SetResolution(img.HorizontalResolution, img.VerticalResolution);

 

                    Graphics grap = Graphics.FromImage(bitmap);

                    grap.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.AntiAlias;

                    grap.DrawImage(img, new Rectangle(0, 0, width, height), 0, 0, width, height, GraphicsUnit.Pixel);

 

                    Font font = new Font("微软雅黑", 24, FontStyle.Bold);

 

                    SolidBrush solid = new SolidBrush(Color.Turquoise);

 

                    StringFormat format = new StringFormat();

                    format.Alignment = StringAlignment.Near;

                    grap.DrawString(title, font, solid, 25, 18, format);

                    grap.Dispose();

 

                    bitmap.Save(Path + FileName, ImageFormat.Jpeg);

                    return "http://" + RequestHelper.GetHost() + "/Upload/Product" + FileName;

                }

                else

                {

                    return string.Empty;

                }

 

            }

            catch (Exception)

            {

                return string.Empty;

            }

        }

    }