ASP.NET ÉÏ´«Í¼Æ¬²¢Éú³ÉËõÂÔͼ

private void btnUploadPicture_Click(object sender, System.EventArgs e) { //¼ì²éÉÏ´«ÎļþµÄ¸ñʽÊÇ·ñÓÐЧ if(this.UploadFile.PostedFile.ContentType.ToLower().IndexOf("image") < 0) { Response.Write("ÉÏ´«Í¼Æ¬¸ñʽÎÞЧ£¡"); return; } //Éú³Éԭͼ Byte[] oFileByte = new byte[this.UploadFile.PostedFile.ContentLength]; System.IO.Stream oStream = this.UploadFile.PostedFile.InputStream; System.Drawing.Image oImage = System.Drawing.Image.fromStream(oStream); int oWidth = oImage.Width; //ԭͼ¿í¶È int oHeight = oImage.Height; //ԭͼ¸ß¶È int tWidth = 100; //ÉèÖÃËõÂÔͼ³õʼ¿í¶È int tHeight = 100; //ÉèÖÃËõÂÔͼ³õʼ¸ß¶È //°´±ÈÀý¼ÆËã³öËõÂÔͼµÄ¿í¶ÈºÍ¸ß¶È if(oWidth >= oHeight) { tHeight = (int)Math.Floor(Convert.ToDouble(oHeight) * (Convert.ToDouble(tWidth) / Convert.ToDouble(oWidth))); } else { tWidth = (int)Math.Floor(Convert.ToDouble(oWidth) * (Convert.ToDouble(tHeight) / Convert.ToDouble(oHeight))); } //Éú³ÉËõÂÔԭͼ Bitmap tImage = new Bitmap(tWidth,tHeight); Graphics g = Graphics.fromImage(tImage); g.InterpolationMode = System.Drawing.Drawing2D.InterpolationMode.High; //ÉèÖøßÖÊÁ¿²åÖµ·¨ g.SmoothingMode = System.Drawing.Drawing2D.SmoothingMode.HighQuality; //ÉèÖøßÖÊÁ¿,µÍËٶȳÊÏÖƽ»¬³Ì¶È g.Clear(Color.Transparent); //Çå¿Õ»­²¼²¢ÒÔ͸Ã÷±³¾°É«Ìî³ä g.DrawImage(oImage,new Rectangle(0,0,tWidth,tHeight), new Rectangle(0,0,oWidth,oHeight),GraphicsUnit.Pixel); string oFullName = Server.MapPath(".") + "/" + "o" + DateTime.Now.ToShortDateString().Replace("-","") + DateTime.Now.Hour.ToString() + DateTime.Now.Minute.ToString() + DateTime.Now.Second.ToString() + DateTime.Now.Millisecond.ToString() + ".jpg"; //±£´æԭͼµÄÎïÀí·¾¶ string tFullName = Server.MapPath(".") + "/" + "t" + DateTime.Now.ToShortDateString().Replace("-","") + DateTime.Now.Hour.ToString() + DateTime.Now.Minute.ToString() + DateTime.Now.Second.ToString() + DateTime.Now.Millisecond.ToString() + ".jpg"; //±£´æËõÂÔͼµÄÎïÀí·¾¶ try { //ÒÔJPG¸ñʽ±£´æͼƬ oImage.Save(oFullName,System.Drawing.Imaging.ImageFormat.Jpeg); tImage.Save(tFul