如何对数据表中超过 2000 条记录进行分页？ MVC

Question

我需要你的帮助。
目前我的查询返回超过 2000 条记录，在通过存储过程从 sql server 获取记录后，我将它们发送到表（我使用 DataTables 库 1.10.19）当它开始形成表格和相应的分页时，问题是它需要超过30秒或更多才能显示表格中的内容，我该怎么做才能让它只显示用户看到的结果（每页 10 条记录）并计算如果用户前进到下一条记录并给我带来以下 10 条记录或页面将如何的其他页面?.
这是我的代码：
控制器：

 public JsonResult Get_Pacientes(int IdEstatus)
{
 List<Paciente> l = new List<Paciente>(Get_RowsPac(IdEstatus));
 var jsonResult = Json(new { success = true, lcontenedor= l}, JsonRequestBehavior.AllowGet);
                    jsonResult.MaxJsonLength = int.MaxValue;
                    return jsonResult;
}

**JavaScript：**

   function ObtieneListaEmp(id) {
            $('#fader').css('display', 'block');
            var EnviaDatos =
            {
                //"e.CVE_EMPLEADO": $('#NOMINA').val(),
                "IdEstatus": id,

            };
            $.ajax({
                url: '../Empleado/EmpleadosXEstatus',
                contentType: 'application/json; charset=utf-8',
                type: 'POST',
                dataType: 'json',
                data: JSON.stringify(EnviaDatos),
                success: function (response) {
                    $('#fader').css('display', 'none');

                    if (response.success) {

                        AgregaTablaEmpPacTest(); //this function adds the table header

                        var data = [];
                        
                        data = response.lcontenedor;
                        setTimeout(function () {
                            //aqui va la tarea
                            $('#tbl').DataTable({
                                data: data,
                                deferRender: true,
                                "columns": [
                                    //{ "data": "CLAVE_AFILIACION" },
                                    { // render //clave afilacion
                                        "data": function (data, type, row, meta) {
                                            return "<a href=\"#\" onclick='LlamaRegistro(" + '"' + data.CLAVE_AFILIACION + '"' + ")'>" + data.CLAVE_AFILIACION + "</a>";
                                        }
                                    },
                                    { "data": "NOMINA" },
                                    {
                                        data: null,
                                        render: function (data, type, row) {
                                            return row.NOMBRE + ' ' + row.APELLIDO_PAT + ' ' + row.APELLIDO_MAT;
                                        }
                                    },
                                    { "data": "TELEFONO_CASA" },
                                    { "data": "CELULAR" },
                                    { "data": "SECRETARIA" },
                                    { "data": "DIRECCION" },
                                    { "data": "PUESTO" },
                                    { "data": "EDAD" },
                                    { "data": "OBSERVACION" },
                                    { "data": "FECHA_SEG" },
                                    { "data": "DESC_ESTATUS_EVO" },
                                    { "data": "FECHA_PRUEBA" },
                                    { "data": "FECHA_RESULTADO" },
                                    { "data": "LUGAR_DE_EXP" },
                                    { "data": "DESC_ESTATUS_PRU" },
                                    { "data": "FECHAINICIO_INC" },
                                    { "data": "DIASINCAPACIDAD_INC" },
                                    { "data": "FECHAFIN_INC" },
                                    //{ "data": "FECHAFIN_INC" },
                                    { // render IMPRIMIR
                                        "data": function (data, type, row, meta) {
                                            return "<button type=\"button\" class=\"btn btn-secondary fa fa-print C_Imprimir\">";
                                        }
                                    },
                                ],
                                "columnDefs": [
                                    {
                                        "targets": [3],
                                        "visible": false,
                                        "searchable": false
                                    },
                                    {
                                        "targets": [4],
                                        "visible": false,
                                        "searchable": false
                                    }
                                ],
                                dom: 'Bfrtip',
                                buttons: [
                                    //'copy', 'csv',
                                    'excel', {
                                        extend: 'pdf',
                                        orientation: 'landscape',
                                        pageSize: 'LEGAL'
                                    }, {
                                        extend: 'print'//,
                                        //messageTop: 'Lista de Empleados Registrados' + response.lOrdenesTrabajo[0].NOMBRE_PROV
                                        , text: 'Imprimir'
                                    }
                                ],
                                "order": [7, 'desc'],//ordernar por fecha de menor a mayor
                                "language": {
                                    "scrollX": true,
                                    "sProcessing": "Procesando...",
                                    "sLengthMenu": "Mostrar _MENU_ registros",
                                    "sZeroRecords": "No se encontraron resultados",
                                    "sEmptyTable": "Ningún dato disponible en esta tabla",
                                    "sInfo": "Mostrando registros del _START_ al _END_ de un total de _TOTAL_ registros",
                                    "sInfoEmpty": "Mostrando registros del 0 al 0 de un total de 0 registros",
                                    "sInfoFiltered": "(filtrado de un total de _MAX_ registros)",
                                    "sInfoPostFix": "",
                                    "sSearch": "Buscar:",
                                    "sUrl": "",
                                    "sInfoThousands": ",",
                                    "sLoadingRecords": "Cargando...",
                                    "oPaginate": {
                                        "sFirst": "Primero",
                                        "sLast": "Último",
                                        "sNext": "Siguiente",
                                        "sPrevious": "Anterior"
                                    },
                                    "oAria": {
                                        "sSortAscending": ": Activar para ordenar la columna de manera ascendente",
                                        "sSortDescending": ": Activar para ordenar la columna de manera descendente"
                                    }
                                }
                            });
                        }, 50);
                        //AgregaTablaEmpPac(response.lcontenedor);


                    }
                    else {
                        alert(response.responseText);
                    }
                },
                error: function (xhr) {
                    $('#fader').css('display', 'none');
                    alert('Ocurrio un Error Inesperado.' + $('#Datos_ID_FechaIn').val());
                }
            })

        };

Answer 1

我有同样的问题，我使用这种类型的代码只是发送所需的记录数：

[DataContract]
public class Course
{
    [DataMember] public string[] UrlsCourse;
    [DataMember] public string BackgroundImage;
    [DataMember] public string KeyWords;
    [DataMember] public string TitleCourse;
    [DataMember] public string[] stats;
    [DataMember] public string description;

    public Course(string[] urlsCourse, string backgroundImage, string keyWords, string titleCourse, string[] stats, string description)
    {
        UrlsCourse = urlsCourse;
        BackgroundImage = backgroundImage;
        KeyWords = keyWords;
        TitleCourse = titleCourse;
        this.stats = stats;
        this.description = description;
    }
}

[DataContract]
public class SearchCourses
{
    [DataMember] public readonly int maxRecords;
    [DataMember] public int maxRecordsPerPage;
    [DataMember] public int currentRecord;
    [DataMember] public int currentPage;
    [DataMember] public int maxPages;
    [DataMember] public int[] minmax;
    [DataMember] public int maxRecordsSent;
    [DataMember] public int currentmaxLinks;
    [DataMember] public Course[] currentDatas;
    [DataMember] public string[] categories;
    public Course[] search;
    public string[] courses;
    public int maxLinks;
    public SearchCourses(string[] courses, int maxRecordsPerPage = 10, int currentPage = 1, int currentRecord = 0, int maxLinks = 9)
    {
        this.currentPage = currentPage;

        this.maxRecordsPerPage = maxRecordsPerPage;
        this.currentRecord = currentRecord;
        this.courses = courses;
        this.maxRecords = courses.Length;
        this.maxLinks = maxLinks;
        this.search = courses.Select(r => getRecord(r.Split(new string[] { "\r\n" }, StringSplitOptions.None))).ToArray();
        categories = this.search.Select(c => c.KeyWords.Split('-')[0].Trim()).Distinct().ToArray();
        currentDatas = search.Take(maxRecordsPerPage).ToArray();

        maxRecordsSent = maxRecords;

        maxPages = maxRecordsSent / maxRecordsPerPage + 1;
        this.currentPage = 1;

        maxPages = maxRecordsSent / maxRecordsPerPage + 1;
        currentmaxLinks = maxLinks > maxPages ? maxPages : maxLinks;
        minmax = new int[] { 1, currentmaxLinks };

    } 

    public string GetJSON()
    {
        string json;



        using (var ms = new MemoryStream())
        {
            DataContractJsonSerializer js = new DataContractJsonSerializer(typeof(SearchCourses));
            js.WriteObject(ms, this);
            ms.Position = 0;
            using (var sr = new StreamReader(ms))
            {
                json = sr.ReadToEnd();
            }
        }

        return json;
    }

它是一个提供不同课程列表的服务器，所以我将最后一次搜索保留在“搜索”中，但只在 currentDatas 中发送所需的数据，（我只序列化 currentDatas 而不是使用 GetJSON() 方法进行的搜索）。

我有一个带有页数的书签……等等……

我管理显示最大页数的书签（这里我有 9 个链接书签），我管理按钮下一页和前进页面..等等..