Я нашел решение, мой контроллер немного изменился, поэтому вот мой новый код:
В моем контроллере:
[HttpGet]
public string Loadregistrationslist(int draw, int? start, int? length)
{
try
{
int IdFilter = 0;
string textFilter = "";
if (start == null)
{
start = 0;
}
else
{
start -= 1;
}
if (start < 1)
start = 0;
if (length == null)
{
length = 10;
}
string orderByDir, search;
int orderByIdx;
List<string> cols = ExtractDataSortAndFilter(out orderByIdx, out orderByDir, out search);
var query = db.Registrations.Select(r => new RegistrationsList()
{
ID = r.ID,
FullName = r.LastName + " " + r.FirstName,
Email = r.Email,
BirthDate = r.BirthDate
});
if (search != null)
{
int n;
search = search.Trim();
var isNumeric = int.TryParse(search, out n);
if (isNumeric)
{
IdFilter = n;
query = query.Where(x => x.ID == IdFilter);
}
else if (search != "")
{
textFilter = search;
query = query.Where(x => x.FullName.Contains(textFilter) || x.Email.Contains(textFilter));
}
}
string sortOrder = $"{cols[orderByIdx]}_{orderByDir.ToUpper()}";
switch (sortOrder)
{
//FullName
case "FullName_DESC":
query = query.OrderByDescending(s => s.FullName);
break;
case "FullName_ASC":
query = query.OrderBy(s => s.FullName);
break;
//Email
case "Email_DESC":
query = query.OrderByDescending(s => s.Email);
break;
case "Email_ASC":
query = query.OrderBy(s => s.Email);
break;
//ID
case "ID_DESC":
query = query.OrderByDescending(s => s.ID);
break;
default: // ID ascending
query = query.OrderBy(s => s.ID);
break;
}
var data = new List<RegistrationsList>();
if (length > -1)
{
data = query.Skip((int)start).Take((int)length).ToList<RegistrationsList>();
}
else
{
data = query.Skip((int)start).ToList<RegistrationsList>();
}
/*var lstData = new List<List<string>>();
foreach (var dataRow in data) {
var row = new List<string>() {
dataRow.ID.ToString(), dataRow.FullName, dataRow.Email, dataRow.BirthDate.ToString()
};
lstData.Add(row);
}*/
var recordsTotal = db.Registrations.Select(x => x.ID).Count();
var recordsFiltered = query.Count();
var response = new DataTablesResponse()
{
draw = draw,
recordsTotal = recordsTotal,
recordsFiltered = recordsFiltered,
data = data
};
return JsonConvert.SerializeObject(response, _jsonSerializerSettings);
}
catch (AjaxFunctionalException ex)
{
return JsonConvert.SerializeObject(new DataTablesResponse()
{
draw = draw,
recordsTotal = 0,
recordsFiltered = 0,
data = new List<RegistrationsList>()/*,
errcode = ex.code,
errmessage = ex.Message,
errdata = ex.data*/
}, _jsonSerializerSettings);
}
catch (Exception ex)
{
return JsonConvert.SerializeObject(new DataTablesResponse()
{
draw = draw,
recordsTotal = 0,
recordsFiltered = 0,
data = new List<RegistrationsList>()
/*code = 5000,
message = ex.Message,
data = null*/
}, _jsonSerializerSettings);
}
}
private List<string> ExtractDataSortAndFilter(out int orderByIdx, out string orderByDir, out string search)
{
List<string> cols;
var QueryString = HttpContext.Request.QueryString;
cols = new List<string>();
string colName = null, colNamePath = "";
int colIdx = 0;
do
{
colNamePath = "columns[" + colIdx + "][data]";
colName = QueryString.Get(colNamePath);
cols.Add(colName);
colIdx++;
} while (colName != null);
string orderBy = QueryString.Get("order[0][column]");
orderByDir = QueryString.Get("order[0][dir]");
search = QueryString.Get("search[value]");
orderByIdx = orderBy == null ? 0 : int.Parse(orderBy);
orderByDir = orderByDir == null ? "asc" : orderByDir;
search = search == null ? "" : search;
return cols;
}
и это мой скрипт:
$(document).ready(function () {
$("#registrationTable").DataTable({
"lengthMenu": [[10, 25, 50, -1], [10, 25, 50, "All"]],
"processing": true,
"serverSide": true,
"ajax": {
"url": "/Home/Loadregistrationslist",
"type": "GET",
"datatype": "json"
},
"columns": [
{
data: null,
title: "<input type=\"checkbox\" id=\"btnSelAllStudents\">",
render: function (data, type, row, meta) {
return '<input type="checkbox" id="cbxRegStudent_' + row.ID + '" value="' + row.ID + '">';
},
targets: "no-sort",
orderable: false
},
{ data: "ID", title: "ID" },
{ data: "FullName", title: "@Resource.FullName" },
{ data: "Email", title: "@Resource.Email" },
{ data: "BirthDate", title: "@Resource.BirthDate" },
{
data: null, title: "Actions",
render: function (data, type, row, meta) {
/*return '<input type="button" class="btn-print printrec" id="' + row.ID + '" value="Print"/>';*/
return '<a href=\"StudentProfile/' + row.ID + '\">@Resource.Profile</a> | <a href=\"StudentEdit/' + row.ID + '\">@Resource.Edit</a>';
},
targets: "no-sort",
orderable: false
}
],
order: [],
});
$("#btnSelAllStudents").on("change", function (e) {
$("input[id^='cbxRegStudent_']").prop("checked", $(this).prop("checked"));
});
$('#registrationTable').on('processing.dt', function (e, settings, processing) {
$("#btnSelAllStudents").prop("checked", false);
}).dataTable();
});