Difficulty sorting Linq expression with jqGrid - linq

Question

I have seen this code Sortable JqGrid using LINQ to MySQL (DbLinq) and Dynamic LINQ - Orderby doesn't work
and trying to make it work. But it's giving error:
Cannot order by type 'System.Object'
See the line in the code with Error Here.
[HttpPost]
public ActionResult MyGridData(string sidx, string sord, int page, int rows)
{
IQueryable<Company> repository = companyRepository.GetGridCompanies();
int pageIndex = Convert.ToInt32(page) - 1;
int pageSize = rows;
int totalRecords = repository.Count();
int totalPages = (int)Math.Ceiling((float)totalRecords / (float)pageSize);
// first sorting the data as IQueryable<Ticket> without converting ToList()
IQueryable<Company> orderdData = repository;
PropertyInfo propertyInfo = typeof(Company).GetProperty(sidx);
if (propertyInfo != null)
{
orderdData = String.Compare(sord, "desc", StringComparison.Ordinal) == 0 ?
(from x in repository
orderby propertyInfo.GetValue(x, null) descending
select x) :
(from x in repository
orderby propertyInfo.GetValue(x, null)
select x);
}
// paging of the results
IQueryable<Company> pagedData = orderdData
.Skip((page > 0 ? page - 1 : 0) * rows)
.Take(rows);
var jsonData = new
{
total = totalPages,
page,
records = totalRecords,
rows = (
from o in pagedData //ERROR HERE : Cannot order by type 'System.Object'
select new
{
i = o.companyID,
cell = new string[] { o.companyID.ToString(), o.companyName, o.companyCity, o.companyState }
}).ToArray()
};
return Json(jsonData);
}
public class CompanyRepository
{
SandGridDataContext db = new SandGridDataContext();
// Send Total Number of Companies
public int CompanyCount()
{
return db.Companies.Count();
}
public IQueryable<Company> GetGridCompanies()
{
return db.Companies;
}
public Company GetCompany(int id)
{
return db.Companies.SingleOrDefault(d => d.companyID == id);
}
}
//JS code
jQuery().ready(function () {
var lastSel;
jQuery("#sandgrid").jqGrid({
url: '/JQSandbox/MyGridData/',
datatype: 'json',
mtype: 'POST',
height: 255,
width: 640,
colNames: ['Index', 'Name', 'City', 'State'],
colModel: [
{ name: 'companyID', index: 'companyID', width: 5 },
{ name: 'companyName', index: 'companyName', width: 30 },
{ name: 'companyCity', index: 'companyCity', width: 30 },
{ name: 'companyState', index: 'companyState', width: 4, sortable: false}],
pager: jQuery('#sandgridp'),
rowNum: 5,
rowList: [5, 10, 20, 50],
sortname: 'companyID',
sortorder: "desc",
viewrecords: true,
altRows: true,
caption: 'Sandbox Grid',
ondblClickRow: function (id) {
if (id && id !== lastSel) {
jQuery('#sandgrid').restoreRow(lastSel);
lastSel = id;
alert("You've seleted " + id);
}
},
subGrid: true,
subGridUrl: '/JQSandbox/MySubGridData/',
subGridModel: [
{
name: ['Name', 'Department', 'Hire Date', 'Supervisor'],
width: [80, 20, 80, 10],
align: ['left', 'left', 'left', 'center'],
params: ['companyID']
}]
}).navGrid('#sandgridp', { edit: false, add: false, del: false });
//Company class is Linq to Sql entity with fields below.
companyID,
companyName,
companyCity,
companyState

Answer 1

I spent too much time to resolve this.
Please check Order LINQ by "string" name.