ASP.NET笔记之 图库权限设置的方法

                if (user.iLevel == 0) //普通用户
                {
                    using (System.Drawing.Bitmap bitImage = new System.Drawing.Bitmap("image/" + fileName))
                    {
                        //设置画布
                        using (System.Drawing.Graphics g = System.Drawing.Graphics.FromImage(bitImage))
                        {
                            g.DrawString("免费用户试用——"+user.sUserName, new System.Drawing.Font("宋体", 20),Brushes.Red, 0, 0);
                           }
                        //保存到输出流中
                        bitImage.Save(context.Response.OutputStream, System.Drawing.Imaging.ImageFormat.Jpeg);

                    }
                }
                else//收费用户
                {
                    context.Response.WriteFile("image/"+fileName);
                }
            }
        }

        public bool IsReusable
        {
            get
            {
                return false;