数据访问分页

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace StudentSystem.DAL
{
    using StudentSystem.Entity;
    using System.Data.SqlClient;
    public class StudentDAL
    {
        /// <summary>
        /// 添加
        /// </summary>
        /// <param name="StudentName"></param>
        /// <param name="Gender"></param>
        /// <param name="ClassesCode"></param>
        /// <returns></returns>
        public int StudentAdd(Student student)
        {
            SqlParameter[] parms = new SqlParameter[]
            {
                new SqlParameter("@StudentName",student.StudentName),
                new SqlParameter("@Gender",student.Gender),
                new SqlParameter("@ClassesCode",student.ClassesCode)
            };
            return DBHelper.ExecuteNonQuery("exec p_StudentAdd @StudentName,@Gender,@ClassesCode",parms);
        }

        /// <summary>
        /// 删除
        /// </summary>
        /// <param name="ID"></param>
        /// <returns></returns>
        public int StudentDel(int ID )
        {
            SqlParameter[] parms = new SqlParameter[]
            {
                new SqlParameter("@ID",ID)
            };
            return DBHelper.ExecuteNonQuery("exec p_StudentDel @ID", parms);
        }

        /// <summary>
        /// 显示+分页+查询
        /// </summary>
        /// <param name="PageIndex"></param>
        /// <param name="Pagesize"></param>
        /// <param name="PageCount"></param>
        /// <param name="StudentName"></param>
        /// <param name="ClassesCode"></param>
        /// <returns></returns>
        public PageBox GetStudentList(int PageIndex,int Pagesize,string StudentName,string  ClassesCode, string SchoolCode)
        {
            SqlParameter[] parms = new SqlParameter[]
            {
                new SqlParameter("@PageIndex",PageIndex),
                new SqlParameter("@Pagesize",Pagesize),
                new SqlParameter("@PageCount",System.Data.SqlDbType.Int),
                new SqlParameter("@StudentName",StudentName),
                new SqlParameter("@ClassesCode",ClassesCode),
                new SqlParameter("@SchoolCode",SchoolCode)
            };
            parms[2].Direction = System.Data.ParameterDirection.Output;
            PageBox pagebox = new PageBox();
            pagebox.CurrentPage = PageIndex;
            var page = DBHelper.ExecuteObjects<Student>("exec p_GetStudentList @PageIndex,@Pagesize,@PageCount output,@StudentName,@ClassesCode,@SchoolCode", parms);
            pagebox.TotlePage = (int)parms[2].Value;
            pagebox.Data = page;
            return pagebox;
            
        }
        /// <summary>
        /// 根据ID 查询信息
        /// </summary>
        /// <param name="ID"></param>
        /// <returns></returns>
        public List<Student> GetStudentListByID(int ID )
        {
            return DBHelper.ExecuteObjects<Student>("exec p_GetStudentListByID @ID", new SqlParameter("@ID", ID));
        }
        /// <summary>
        /// 修改保存
        /// </summary>
        /// <param name="StudentName"></param>
        /// <param name="Gender"></param>
        /// <param name="ClassesCode"></param>
        /// <param name="ID"></param>
        /// <returns></returns>
        public int StudentUpdate(Student student )
        {
            SqlParameter[] parms = new SqlParameter[]
            {
                new SqlParameter("@StudentName",student.StudentName),
                new SqlParameter("@Gender",student.Gender),
                new SqlParameter("@ClassesCode",student.ClassesCode),
                new SqlParameter("@ID",student.ID)
            };
            return DBHelper.ExecuteNonQuery("EXEC dbo.p_UpdateStudentList @StudentName,@Gender,@ClassesCode,@ID",parms);
        }


    }
}

public class PageBox
{
/// <summary>
/// 当前页
/// </summary>
public int CurrentPage { get; set; }
/// <summary>
/// 总页数
/// </summary>
public int TotlePage { get; set; }
/// <summary>
/// 要显示的数据
/// </summary>
public object Data { get; set; }
}