How to solve circular reference was detected while serializing an object of type error.

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C#

jQuery

DataTable

I am having a list that each list item contain another list. On the time of render the column it will give me error "http://datatables.net/tn/7". I look a lot but not found any solution. Please help me to overcome by this issue.

Full Error is below

A circular reference was detected while serializing an object of type 'System.Data.Entity.DynamicProxies.tblPropertyDocument_C39281F23DAA0C224A777580A8038E1E55D91AF3EBEC9D53EF39EC1E6EAAAD0C'.

What I have tried:

Actually I have a list of objects and inside each object i have another list. When i will return data to the datatable it will generate the circular error due for the inner list items. I know why this problem occur but not get how to resolve it.
Below is my code:

var SelectedAllSending = AllSending1.Select(s => new OutgoingCommunicationVM()
{
dDate = s.dDate,
id = s.id,
cDescription = s.tblDDLSelect.cDescription,
cSubject = s.cSubject,
Recipients = (from t in db.tblRecipients where (t.nMessageID == s.id) orderby t.cName select t).Take(3).ToList(),
TotalRecords = totalRecords,
PageCount = GetPageCountUSPS(s.id, s.tblDDLSelect.cDescription),
EstimatedCost = GetCost(s.id, s.tblDDLSelect.cDescription)
}).ToList();

as you see in my code I have a list "SelectedAllSending" and inside this list I have another list by the name off "Recipients".

When i will return value to the datatable it will give me error. Below is my code.

return Json(new { draw = draw, recordsFiltered = recordsTotal, recordsTotal = recordsTotal, data = SelectedAllSending }, JsonRequestBehavior.AllowGet);

object inside object gives circular error on json return. Or how i can pass list inside list in datatable.
please help me to overcome this issue.