How to Pass Value from Control to View Json - asp.net-mvc

Question

I am a beginner in ASP.NET MVC. Here is my code, I'm looking for expert help.
In this code i am calculating SaleTotal
[HttpPost]
public double SaleTotal(DateTime? FromDate, DateTime? ToDate)
{
var Sales = from s in db.SalesMasters
where (s.BillDate >= FromDate && s.BillDate <= ToDate)
select s.STotal;
var SalesReturn = from s in db.SReturnMasters
where s.ReturnDate >= FromDate && s.ReturnDate <= ToDate
select s.SRTotal;
double TotalSales = Sales.Sum().GetValueOrDefault();
double TotalSalesReturn = SalesReturn.Sum().GetValueOrDefault();
double Balance = TotalSales - TotalSalesReturn;
return Balance;
}
public ActionResult AllSaleReport(JQueryDataTableParamModel param, int? BillNo , DateTime ? FromDate,DateTime? ToDate)
{
double SalesTotal=SaleTotal(FromDate, ToDate);
var Sales = (from S in db.SalesMasters
where (S.BillDate >= FromDate && S.BillDate <= ToDate )
select S).ToList();
var filteredSales=(from S in db.SalesMasters
where (S.BillDate >= FromDate && S.BillDate <= ToDate && S.CancelFlag==false )
select S).ToList();
var result = from S in filteredSales.Skip(param.iDisplayStart).Take(param.iDisplayLength)
select new[] { S.BillDate.GetValueOrDefault().ToString("dd-MMM-yyyy"), Convert.ToString(S.BillNo), S.RefName, S.Paymode, Convert.ToString(S.NetAmt) };
return Json(new
{
sEcho = param.sEcho,
iTotalRecords = Sales.Count,
iTotalDisplayRecords = filteredSales.Count,
aaData = result,
SalesReturn = SaleTotal(FromDate, ToDate)
},
JsonRequestBehavior.AllowGet);
}
My JavaScript to load data to DataTable
function LoadAllData() {
var reportTable = $('#AllSales').dataTable({
"processing": true,
//"bprocessing": true,
"bJQueryUI": false,
"bServerSide": true,
"bFilter": false,
//"bAutoWidth": true,
"bDestroy": true,
"iDisplayLength": 20,
//"sProcessing": "<img src=~/Content/images/ajax-loader.gif />",
"dom": 'T<"clear">lfrtip',
"sSwfPath": "~/swf/copy_csv_xls_pdf.swf",
"fnPreDrawCallback": function () {
$("#AllSales").hide();
$("#loading").show();
// alert("Pre Draw");
},
"fnDrawCallback": function () {
$("#AllSales").show();
$("#loading").hide();
// alert("Draw");
},
"fnInitComplete": function () {
},
"fnServerParams": function (aoData) {
aoData.push({ "name": "FromDate", "value": $("#FromDate").val() })
aoData.push({ "name": "ToDate", "value": $("#ToDate").val() })
},
"sAjaxSource": "/Report/AllSaleReport",
"footerCallback": function (row, aoData, start, end, display) {
var api = this.api(), aoData;
// Remove the formatting to get integer data for summation
var intVal = function (i) {
return typeof i === 'string' ?
i.replace(/[\$,]/g, '') * 1 :
typeof i === 'number' ?
i : 0;
};
// Total over all pages
data = api.column(4).data();
alert(data.length);
// alert(SalesReturn);
total = data.length ?
data.reduce(function (a, b) {
return intVal(a) + intVal(b);
}) :
0;
// Total over this page
data = api.column(4, { page: 'current' }).data();
pageTotal = data.length ?
data.reduce(function (a, b) {
return intVal(a) + intVal(b);
}) :
0;
// Update footer
$(api.column(4).footer()).html(
'$' + pageTotal + ' ( $' + total + ' total)'
);
}
});
};
I want to pass SaleTotal to DataTable or my View
How can I Pass SaleTotal from controller to view. I tried many ways but still my problem not solved.

Answer 1

If I understand this correctly the data you want is the data from the SaleTotal method.
That data is in the json returned from the AllSaleReport method:
return Json(new
{
...
SalesReturn = SaleTotal(FromDate, ToDate)
},
So when you call the AllSaleReport from DataTable use fnServerData to override the function that gets that data and insert it where you want it. Something like:
"fnServerData": function (sSource, aoData, fnCallback) {
$.getJSON(sSource, aoData, function (result) {
var saleTotal = result.SalesReturn;
// Insert saleTotal in footer
fnCallback(result);
});
},