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  • IDispose接口实现

    using System;
    using System.Collections.Generic;
    using System.Linq;
    using System.Data;
    using ContosoUniversity.Models;

    namespace ContosoUniversity.DAL
    {
        public class StudentRepository : IStudentRepository, IDisposable

        {
            private SchoolContext context;

            public StudentRepository(SchoolContext context)
            {
                this.context = context;
            }

            public IEnumerable<Student> GetStudents()
            {
                return context.Students.ToList();
            }

            public Student GetStudentByID(int id)
            {
                return context.Students.Find(id);
            }

            public void InsertStudent(Student student)
            {
                context.Students.Add(student);
            }

            public void DeleteStudent(int studentID)
            {
                Student student = context.Students.Find(studentID);
                context.Students.Remove(student);
            }

            public void UpdateStudent(Student student)
            {
                context.Entry(student).State = EntityState.Modified;
            }

            public void Save()
            {
                context.SaveChanges();
            }

            private bool disposed = false;

            protected virtual void Dispose(bool disposing)
            {
                if (!this.disposed)
                {
                    if (disposing)
                    {
                        context.Dispose();
                    }
                }
                this.disposed = true;
            }

            public void Dispose()
            {
                Dispose(true);
                GC.SuppressFinalize(this);
            }
        }
    }

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  • 原文地址:https://www.cnblogs.com/swarb/p/9924314.html
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