！！c# 图片水印效果！！

Question

c# 图片水印效果不是特别难，但是我现在是想在cdr文件上面加水印，最后印刷出来了也有水印效果，能实现吗？

Answer 1

            System.Drawing.Image oldImage;
            //context.Response.ContentType = "text/plain";
            //context.Response.Write("Hello World");
            string path = context.Request.QueryString["path"];
            string cover = context.Request.MapPath("~/Photo/") + path;            if (File.Exists(cover))
            {
                oldImage = Image.FromFile(cover);  //请求图片
                Image waterMark = Image.FromFile(context.Request.MapPath("~/Image/water.jpg"));  //水印图片                //实例化画布
                Graphics g = Graphics.FromImage(oldImage);
                //  g.Clear(Color.White);
                g.DrawImage(waterMark, oldImage.Width - waterMark.Width, oldImage.Height - waterMark.Height);                //释放画布
                g.Dispose();
                //释放水印图片
                waterMark.Dispose();
            }
            else
            {
                oldImage = Image.FromFile(context.Request.MapPath("~/Image/noperson.jpg"));
            }            //设置输出格式
            context.Response.ContentType = "Image/jpeg";
            //将图片存入输出流
            oldImage.Save(context.Response.OutputStream, System.Drawing.Imaging.ImageFormat.Jpeg);
            oldImage.Dispose();
            context.Response.End();