C# 基础项目——课程管理系统DEMO（三）之BLL

C# 基础项目——课程管理系统DEMO（三）

一：BLL层

1.BLL层基本构成

BLL
CourseManager	1 namespace CourseManageBLL 2 { 3 public class CourseManager 4 { 5 private CourseService courseService = new CourseService(); 6 7 #region 添加课程 8 public int AddCourse(Course course) 9 { 10 return courseService.AddCourse(course); 11 } 12 #endregion 13 14 #region 查询课程 15 /// <summary> 16 /// 根据多个查询条件动态组合查询 17 /// </summary> 18 /// <param name="categoryId">课程分类编号</param> 19 /// <param name="courseName">课程名称</param> 20 /// <returns></returns> 21 public List<Course> QueryCourse(int categoryId, string courseName) 22 { 23 return courseService.QueryCourse(categoryId, courseName); 24 } 25 #endregion 26 27 #region 修改课程 28 public int ModifyCourse(Course course) 29 { 30 return courseService.ModifyCourse(course); 31 } 32 #endregion 33 34 #region 删除课程 35 public int DeleteCourse(Course course) 36 { 37 return courseService.DeleteCourse(course); 38 } 39 #endregion 40 } 41 } CourseManager
TeacherManager	1 namespace CourseManageBLL 2 { 3 public class TeacherManager 4 { 5 private TeacherService teacherService = new TeacherService(); 6 7 public Teacher TeacherLogin(Teacher teacher) 8 { 9 teacher = teacherService.TeacherLogin(teacher); 10 return teacher; 11 } 12 } 13 } TeacherManager
CourseCategoryManager	1 namespace CourseManageBLL 2 { 3 public class CourseCategoryManager 4 { 5 private CourseCategoryService categoryService = new CourseCategoryService(); 6 public List<CourseCategory> GetCourseCategories() 7 { 8 return categoryService.GetCourseCategories(); 9 } 10 } 11 } CourseCategoryManager

BLL

CourseManager

 1 namespace CourseManageBLL
 2 {
 3     public class CourseManager
 4     {
 5         private CourseService courseService = new CourseService();
 6 
 7         #region 添加课程
 8         public int AddCourse(Course course)
 9         {
10             return courseService.AddCourse(course);
11         }
12         #endregion
13 
14         #region 查询课程
15         /// <summary>
16         /// 根据多个查询条件动态组合查询
17         /// </summary>
18         /// <param name="categoryId">课程分类编号</param>
19         /// <param name="courseName">课程名称</param>
20         /// <returns></returns>
21         public List<Course> QueryCourse(int categoryId, string courseName)
22         {
23             return courseService.QueryCourse(categoryId, courseName);
24         }
25         #endregion
26 
27         #region 修改课程
28         public int ModifyCourse(Course course)
29         {
30             return courseService.ModifyCourse(course);
31         }
32         #endregion
33 
34         #region 删除课程
35         public int DeleteCourse(Course course)
36         {
37             return courseService.DeleteCourse(course);
38         }
39         #endregion
40     }
41 }

CourseManager

TeacherManager

 1 namespace CourseManageBLL
 2 {
 3     public class TeacherManager
 4     {
 5         private TeacherService teacherService = new TeacherService();
 6 
 7         public Teacher TeacherLogin(Teacher teacher)
 8         {
 9             teacher = teacherService.TeacherLogin(teacher);
10             return teacher;
11         }
12     }
13 }

TeacherManager

CourseCategoryManager

 1 namespace CourseManageBLL
 2 {
 3     public class CourseCategoryManager
 4     {
 5         private CourseCategoryService categoryService = new CourseCategoryService();
 6         public List<CourseCategory> GetCourseCategories()
 7         {
 8             return categoryService.GetCourseCategories();
 9         }
10     }
11 }

CourseCategoryManager

END

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原文地址：https://www.cnblogs.com/zeon/p/16012494.html