Exemplo n.º 1
0
 /// <summary>
 /// 添加新学生
 /// </summary>
 /// <param name="model">要添加的学生</param>
 /// <returns>成功返回true</returns>
 public static bool AddStudent(Student model)
 {
     try
     {
         using (var db = new SEMSDBContext())
         {
             db.Student.Add(model);
             db.SaveChanges();
         }
         return true;
     }
     catch// (Exception ee)
     {
         //throw ee.InnerException;
         return false;
     }
 }
Exemplo n.º 2
0
 /// <summary>
 /// 修改学生信息
 /// </summary>
 /// <param name="class_id">学号</param>
 /// <param name="model">修改后的学生信息</param>
 /// <returns>成功返回true</returns>
 public static bool ModifyStudent(string student_id, Student model)
 {
     try
     {
         using (var db = new SEMSDBContext())
         {
             Student temp = db.Student.Find(student_id);
             //db.Student.Attach(temp);
             temp.student_name = model.student_name;
             temp.student_sex = model.student_sex;
             temp.class_id = model.class_id;
             temp.class_small_id = model.class_small_id;
             db.SaveChanges();
         }
         return true;
     }
     catch
     {
         return false;
     }
 }
Exemplo n.º 3
0
        /// <summary>
        /// 从Excel批量导入学生信息
        /// 说明:必须是“Sheet1”,必须有姓名、学号、性别列。
        /// </summary>
        /// <returns>成功添加或修改的学生个数,若出错返回-1</returns>
        public static int ImportStudent(string class_id, string class_small_id, string fileName)
        {
            try
            {
                int ret = 0;
                using (var db = new SEMSDBContext())
                {
                    //string strConn = "Provider=Microsoft.ACE.OLEDB.12.0;Extended Properties='Excel 12.0;HDR=YES;IMEX=1'Data Source=" + fileName + ";";  //HDR=Yes,代表第一行是标题,不做为数据使用 ,如果用HDR=NO,则表示第一行不是标题,做为数据来使用。系统默认的是YES。IMEX=1,表示只读
                    string strConn = "Provider=Microsoft.ACE.OLEDB.12.0; Persist Security Info=False;Data Source=" + fileName + "; Extended Properties='Excel 12.0;HDR=Yes;IMEX=1'";
                    using (OleDbConnection conn = new OleDbConnection(strConn))
                    {

                        try
                        {
                            conn.Open();
                            string sql = "select * from [Sheet1$]";
                            OleDbCommand cmd = new OleDbCommand(sql, conn);
                            OleDbDataReader dr = cmd.ExecuteReader();
                            while (dr.Read())
                            {
                                Student student = new Student()
                                {
                                    student_name = dr["姓名"].ToString(),
                                    student_id = dr["学号"].ToString(),
                                    student_sex = dr["性别"].ToString(),
                                    class_id = class_id,
                                    class_small_id = class_small_id
                                };
                                if (StudentBS.AddStudent(student))
                                {
                                    ret++;
                                }
                                else if (StudentBS.ModifyStudent(student.student_id, student))
                                {
                                    ret++;
                                }
                            }
                        }
                        catch (Exception e)
                        {
                            throw e;
                        }
                        finally
                        {
                            conn.Close();
                        }
                    }
                }
                return ret;
            }
            catch
            {
                return -1;
            }
        }
Exemplo n.º 4
0
 public static void TestStuAdd(Student model)
 {
     StudentBS.AddStudent(model);
 }