protected void btnUpdateGravatar_Click(object sender, EventArgs e)
 {
     BLL.Tao.Courses CourseBll = new BLL.Tao.Courses();
     int imageWidth = Int32.Parse(txt_width.Text);
     int imageHeight = Int32.Parse(txt_height.Text);
     int cutTop = Int32.Parse(txt_top.Text);
     int cutLeft = Int32.Parse(txt_left.Text);
     int dropWidth = Int32.Parse(txt_DropWidth.Text);
     int dropHeight = Int32.Parse(txt_DropHeight.Text);
     uploadFolder += "/" + CurrentUser.UserID + "/" + CourseId;
     string filename = Maticsoft.Common.CutPhotoHelp.SaveCutPic(Server.MapPath(ImageIcon.ImageUrl), Server.MapPath("/" + uploadFolder), 0, 0, dropWidth, dropHeight, cutLeft, cutTop, imageWidth, imageHeight);
     if (CourseId > 0)
     {
         Model.Tao.Courses CourseModle = new Model.Tao.Courses();
         CourseModle.ImageUrl = "/" + uploadFolder + "/" + filename;
         CourseModle.CourseID = CourseId;
         string returnUrl = Request.QueryString["ReturnUrl"];
         if (CourseBll.EditCourseThumbnai(CourseModle))
         {
             Response.Redirect(returnUrl);
         }
         else
         {
             Maticsoft.Common.MessageBox.Show(this, "课程图片上传失败!");
             Response.Redirect(returnUrl);
             return;
         }
     }
 }
 protected void Page_Load(object sender, EventArgs e)
 {
     if (!IsPostBack)
     {
         BLL.Tao.Courses courseBll = new BLL.Tao.Courses();
         DataSet ds = courseBll.GetRecommendedCourseList(this.courseId, this.top);
         this.DataList_RecommendedList.DataSource = ds;
         this.DataList_RecommendedList.DataBind();
     }
 }
 public int GetBuyNums(object courseId)
 {
     if (courseId != null)
     {
         if (!string.IsNullOrEmpty(courseId.ToString()))
         {
             BLL.Tao.Courses coursesBLL = new BLL.Tao.Courses();
          return    coursesBLL.GetSellCourseNum(int.Parse(courseId.ToString()));
         }
         else
         {
             return 0;
         }
     }
     else
     {
         return 0;
     }
 }