C#调用存储过程实现分页(个人代码笔记)

分页的存储过程：
drop proc LoadPageMain

create Proc LoadPageMain
@pageIndex  int,
@pageSize  int,
@count  int  out
as
select top(@pageSize) *  from dbo.MyStudent
where Fid not  in
(
     select top(@pageSize*(@pageIndex- 1)) Fid
     from dbo.MyStudent
    order by Fid
)
order by Fid
select @count=COUNT( 1)  from dbo.MyStudent




DAL层调用分页存储过程：

  public List<Model.MyStudent> getPagedList( int pageIndex,  int pageSize,  out  int count)
        {
            List<Model.MyStudent> modelList =  new List<Model.MyStudent>();            // 创建最终要返回的model 的 List集合对象

             string connStr =  " server=.;database=CCDB;uid=sa;pwd=130988825 ";

             using (SqlConnection conn =  new SqlConnection(connStr))
            {
                 using (SqlCommand cmd =  new SqlCommand())                            // 创建command对象
                {
                    cmd.Connection = conn;                                 
                    cmd.CommandType = CommandType.StoredProcedure;                  设置command 对象的type属性
                    cmd.CommandText =  " LoadPageMain ";                 // 指定相应的存储过程

                    cmd.Parameters.Add( new SqlParameter( " @pageIndex ",pageIndex));     // 为存储过程添加参数
                    cmd.Parameters.Add( new SqlParameter( " @pageSize ",pageSize));
                    SqlParameter outCount =  new SqlParameter( " @count ",SqlDbType.Int);      // 创建将要输出的参数，并添加到参数集合中
                    outCount.Direction = ParameterDirection.Output;
                    cmd.Parameters.Add(outCount);

                    conn.Open();

                     using (SqlDataAdapter sda =  new SqlDataAdapter(cmd))              // 用SqlDataReader 对象回去数据，不用担心conn断开的问题
                    {
                        DataSet ds =  new DataSet();       
                        sda.Fill(ds);            // 获取存储过程返回的数据集

                        count = ( int)outCount.Value;          //  注意：获取 存储过程输出的参数值

                         foreach (DataRow row  in ds.Tables[ 0].Rows )              
                        {
                            Model.MyStudent model =  new Model.MyStudent();               

                            model.FName = Convert.ToString(row[ 1]);
                            model.FAge = Convert.ToInt32(row[ 2]);
                            model.FGender = Convert.ToString(row[ 3]);
                            model.FMath = row[ 4]  is DBNull? null: ( int?)Convert.ToInt32(row[ 4]);
                            model.FEnglish = Convert.ToInt32(row[ 5]);
                            model.FClassId = Convert.ToInt32(row[ 6]);
                            model.FBirthday = Convert.ToDateTime(row[ 7]);

                            modelList.Add(model);
                        }
                    }

                }
            }
             return modelList;
        }



aspx页面输出分页的方式：     在后台拼接字符串（数据输出的、分页连接的）输出到前台，后台通过前台传来的pageIndex、pageSize参数来动态改变数据

  protected  void Page_Load( object sender, EventArgs e)
        {
             int count =  0;
             int pageIndex = Request[ " pageIndex "]== null? 1:Convert.ToInt32(Request[ " pageIndex "]);
             int pageSize = Request[ " pageSize "]== null? 20:Convert.ToInt32(Request[ " pageSize "]);
   
            BLL.MyStudent bll_mystudent =  new BLL.MyStudent();
            List<Model.MyStudent> modelList= bll_mystudent.getPagedList(pageIndex, pageSize,  out count);

            StringBuilder sb =  new StringBuilder();
             for ( int i =  0; i < modelList.Count; i++)
            {
                sb.Append( string.Format( " <tr>  <td> " + modelList[i].FName +  " </td> <td> " + modelList[i].FAge +  " </td> <td> " + modelList[i].FGender +  " </td> <td> " + modelList[i].FMath  +  " </td> <td> " + modelList[i].FEnglish +  " </td> <td> " + modelList[i].FClassId +  " </td> <td> " + modelList[i].FBirthday +  " </td> <td>修改 删除 详情</td>    </tr> "));
            }
            trBody = sb.ToString();


             int pageCount=(count- 1)/pageSize+ 1;
            StringBuilder sbFY =  new StringBuilder();
            sbFY.Append( " <a href='？pageSize=20&pageIndex=1'>上一页</a>  ");
             for ( int i =  0; i < pageCount; i++)
            {
                sbFY.Append( string.Format( " <a href='?pageSize=20&pageIndex={0}'>{0}</a>&nbsp;&nbsp;&nbsp; ", i, i));
            }
            sbFY.Append( " <a href='？pageSize=20&pageIndex=1'>下一页</a>  ");
            strFY = sbFY.ToString();
        }