学步园

//上传文件<br /> string extension = Path.GetExtension(UploadFile.PostedFile.FileName).ToUpper();<br /> 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();<br /> string path = Server.MapPath(".") + "/UploadFile/" + fileName + extension;<br /> UploadFile.PostedFile.SaveAs(path);<br /> //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<br /> System.Drawing.Image image = System.Drawing.Image.FromFile(path);<br /> Graphics g = Graphics.FromImage(image);<br /> g.DrawImage(image, 0, 0, image.Width, image.Height);<br /> Font f = new Font("Verdana", 32);<br /> Brush b = new SolidBrush(Color.White);<br /> string addText = AddText.Value.Trim();<br /> g.DrawString(addText, f, b, 10, 10);<br /> g.Dispose();<br /> //加图片水印<br /> System.Drawing.Image image = System.Drawing.Image.FromFile(path);<br /> System.Drawing.Image copyImage = System.Drawing.Image.FromFile( Server.MapPath(".") + "/Alex.gif");<br /> Graphics g = Graphics.FromImage(image);<br /> 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);<br /> g.Dispose();<br /> //保存加水印过后的图片,删除原始图片<br /> string newPath = Server.MapPath(".") + "/UploadFile/" + fileName + "_new" + extension;<br /> image.Save(newPath);<br /> image.Dispose();<br /> if(File.Exists(path))<br /> {<br /> File.Delete(path);<br /> }<br /> Response.Redirect(newPath);<br />