'System.OutOfMemoryException' was thrown while loading bulk data - json

Question

When I loaded 100,000 rows with 20 columns intp kendo grid, I am getting 500 error.
So i have checked the response of json , getting memory out of exception . This is the following code.
In the webconfig,have set
<system.web.extensions>
<scripting>
<webServices>
<jsonSerialization maxJsonLength="500000000"/>
</webServices>
</scripting>
</system.web.extensions>
This is the mvc controller.
public JsonResult JqueryKendoGridVirtualScrolling()
{
using (var s = new KendoEntities())
{
var x = s.premiumsbytreaties.ToList().Take(100000);
if (x != null)
{
var jsonResult = Json(x, JsonRequestBehavior.AllowGet);
jsonResult.MaxJsonLength = int.MaxValue;
return jsonResult;
//return Json(x.ToList(), JsonRequestBehavior.AllowGet);
}
else
{
return null;
}
};
}
It is working fine for 6 columns.But not working for 15 columns.
working fine with 20,000 thousand record,see the output

Answer 1

Two problems here:
500,000,000 characters is too long for the JSON content of an HTTP Response. This will take time to pass over the network and that is before the client browser can parse and process the data (taking time and memory).
1% of this is still too much.
You are not using Kendo's support for "Grid / Virtualization of remote data".
In their example the action's first parameter is [DataSourceRequest] DataSourceRequest request and then this is used (with the ToDataSource extension method) in creating the response.
Like with AJAX methods supporting Kendo Grids (and other controls)
these work together to pass paging, sorting and filtering parameters and
apply to the data before it is returned.
If your data is an IQueryable<T> for a suitable db provider this will
happen on the database.