NET给图片添加水印的方法代码.doc

.NET给图片水印?? ? private void Btn_Upload_Click(object sender, System.EventArgs e)??????? {??????????? if(UploadFile.PostedFile.FileName.Trim()!=)??????????? {??????????????? //上传文件??????????????? string extension = Path.GetExtension(UploadFile.PostedFile.FileName).ToUpper();??????????????? string fileName = DateTime.Now.Year.ToString() + DateTime.Now.Month.ToString() + DateTime.Now.Day.ToString() + DateTime.Now.Hour.ToString() + DateTime.Now.Minute.ToString() + DateTime.Now.Second.ToString();??????????????? string path = Server.MapPath(.) + /UploadFile/ + fileName + extension;??????????????? UploadFile.PostedFile.SaveAs(path); ??????????????? //加文字水印，注意，这里的代码和以下加图片水印的代码不能共存??????????????? System.Drawing.Image image = System.Drawing.Image.FromFile(path);??????????????? Graphics g = Graphics.FromImage(image);??????????????? g.DrawImage(image, 0, 0, image.Width, image.Height);??????????????? Font f = new Font(Verdana, 32);??????????????? Brush b = new SolidBrush(Color.White);??????????????? string addText = AddText.Value.Trim();??????????????? g.DrawString(addText, f, b, 10, 10);??????????????? g.Dispose(); ??????????????? //加图片水印??????????????? System.Drawing.Image image = System.Drawing.Image.FromFile(path);??????????????? System.Drawing.Image copyImage = System.Drawing.Image.FromFile( Server.MapPath(.) + /Alex.gif);??????????????? Graphics g = Graphics.FromImage(image);??????????????? g.DrawImage(copyImage, new Rectangle(image.Width-copyImage.Width, image.Height-copyImage.Height, copyImage.Width, copyImage.Height), 0, 0, copyImage.Width, copyImage.Height, GraphicsUnit.Pixel);??????????????? g.Dispose(); ??????????????? //保存加水印过后的图片,删除原始图片??????????????? string newPath = Server.MapPath(.) + /UploadFile/ + fileName + _new + extension;??????????????? image.Save(newPath);??????????????? image.Dispose();??????????????? if(File.Exists(path))??????????????? {??????????????????? File.Delete(path);??????????????? } ??????????????? Response.Redirect(n