I'm reading about igGrid remote paging here : http://help.infragistics.com/NetAdvantage/jQuery/2013.1/CLR4.0?page=igGrid_Paging.html.

As per the link above, it says :

"If you are implementing your own remote service (for example in ASP.NET or PHP), in order to properly initialize and render the pager, your service must specify both the responseDataKey (grid option) and the recordCountKey (paging option). The recordCountKey member tells the Paging widget how many records in total are in the backend. The responseDataKey specifies which property in the response contains the resulting data.

I am returning my data in responseDataKey and recordCountKey but it  is not working for me. I have tried by removing [GridDataSourceAction] attribute from my Action.

Below is my code : 

CSHTML : 

@( Html.Infragistics().Grid<Searchclient>()
.ID("igGrid1")
.Width("auto")
.EnableHoverStyles(false)

// Enable continuous virtualization
.PrimaryKey("PartyId1")

.Columns(column =>
{
column.For(x => x.FullName).DataType("string").HeaderText("Full Name").Template("<div style='min-width:100px'>${FullName}</div> ");

//column.For(x => x.TelPremise).DataType("string").HeaderText("Tel Premise").Template("<div style='min-width:100px'>${TelPremise}</div> ");

//column.For(x => x.TelCell).DataType("string").HeaderText("Tel Cell").Template("<div style='min-width:100px'>${TelCell}</div> ");

column.For(x => x.CompanyName).DataType("string").HeaderText("Company Name").Template("<div style='min-width:150px'>${CompanyName}</div> ").Hidden(true);
column.For(x => x.FirstName1).DataType("string").HeaderText("FirstName1").Template("<div style='min-width:130px'>${FirstName1}</div> ").Hidden(true);
column.For(x => x.LastName1).DataType("string").HeaderText("Last Name1").Template("<div style='min-width:130px'>${LastName1}</div> ").Hidden(true);
column.For(x => x.Firstname2).DataType("string").HeaderText("First Name2").Hidden(true);
column.For(x => x.Lastname2).DataType("string").HeaderText("Last Name2").Hidden(true);
column.For(x => x.StreetNo).DataType("string").HeaderText("Street No").Template("<div style='min-width:100px'>${StreetNo}</div> ").Hidden(true);
column.For(x => x.Street).DataType("string").HeaderText("Street").Template("<div style='min-width:100px'>${Street}</div> ").Hidden(true);
column.For(x => x.Address).DataType("string").HeaderText("Address").Template("<div style='min-width:100px'>${Address}</div> ");
column.For(x => x.City).DataType("string").HeaderText("City").Template("<div style='min-width:80px'>${City}</div> ");
column.For(x => x.State).DataType("string").HeaderText("State").Template("<div style='min-width:80px'>${State}</div> ");
column.For(x => x.Zipcode).DataType("string").HeaderText("Zipcode").Template("<div style='min-width:100px'>${Zipcode}</div> ");
column.For(x => x.CustomerNumber).DataType("string").HeaderText("Customer Number").Hidden(true);
column.For(x => x.AccountNumber).DataType("string").HeaderText("Account Number").Template("<div style='min-width:120px'>${AccountNumber}</div> ");
column.For(x => x.Email1).DataType("string").HeaderText("Email1").Template("<div style='min-width:100px'>${Email1}</div> ");
column.For(x => x.Email2).DataType("string").HeaderText("Email2").Template("<div style='min-width:100px'>${Email2}</div> ");
column.For(x => x.Email3).DataType("string").HeaderText("Email3").Hidden(true);
column.For(x => x.Email4).DataType("string").HeaderText("Email4").Hidden(true);
//column.For(x => x.PartyId).DataType("string").HeaderText("PartyId");
column.For(x => x.PartyId1).HeaderText("PartyId").DataType("int").Hidden(true);

})
.Features(features =>
{

features.Responsive().ForceResponsiveGridWidth(false).EnableVerticalRendering(false).ColumnSettings(setting =>
{
setting.ColumnSetting().ColumnKey("FullName").Classes("ui-visible-phone ui-visible-tablet ui-visible-desktop").Configuration(conf => conf.AddColumnModeConfiguration("phone", c => c.Template("<span>${FullName}</span>")));

setting.ColumnSetting().ColumnKey("telpremise").Classes("ui-hidden-phone");
setting.ColumnSetting().ColumnKey("firstname1").Classes("ui-visible-desktop");
setting.ColumnSetting().ColumnKey("telcell").Classes("ui-visible-desktop");
setting.ColumnSetting().ColumnKey("street").Classes("ui-visible-desktop");
setting.ColumnSetting().ColumnKey("address").Classes("ui-hidden-phone");
setting.ColumnSetting().ColumnKey("lastname1").Classes("ui-visible-desktop");
setting.ColumnSetting().ColumnKey("email1").Classes("ui-hidden-phone");
setting.ColumnSetting().ColumnKey("address").Classes("ui-hidden-phone");
setting.ColumnSetting().ColumnKey("zipcode").Classes("ui-visible-desktop");
setting.ColumnSetting().ColumnKey("accountnumber").Classes("ui-visible-desktop");
setting.ColumnSetting().ColumnKey("email2").Classes("ui-visible-desktop");
setting.ColumnSetting().ColumnKey("city").Classes("ui-visible-desktop");
setting.ColumnSetting().ColumnKey("state").Classes("ui-hidden-phone");
setting.ColumnSetting().ColumnKey("PartyId1").Classes("ui-hidden-phone");

});

features.Hiding().HiddenColumnIndicatorHeaderWidth(14).ColumnSettings(s => s.ColumnSetting().ColumnKey("CompanyName").AllowHiding(true));
features.Resizing().AllowDoubleClickToResize(true).DeferredResizing(true);
features.Paging().Type(OpType.Remote).PageSize(10).PrevPageLabelText("Prev").NextPageLabelText("Next");
features.Sorting().Type(OpType.Local).Mode(SortingMode.Single).ColumnSettings(settings =>
{
settings.ColumnSetting().ColumnKey("PartyId").AllowSorting(true);

});
features.RowSelectors().EnableCheckBoxes(true).EnableRowNumbering(false);
features.Selection().MouseDragSelect(false).MultipleSelection(false).Mode(SelectionMode.Row);
features.Filtering().Mode(FilterMode.Simple);
features.Sorting().Type(OpType.Remote);
})

.DataSourceUrl(Url.Action("GetAccountList"))
.Width("auto")

.DataBind()
.Render()
)

CS : 

// [GridDataSourceAction]
public ActionResult GetAccountList(int page, int pageSize)
{
if (Session["Condition"] != null)
{
string condition = (string)Session["Condition"];
var searchlist = DBmain.GetSearchClientPaging(condition, page, pageSize);
return Json(new
{
responseDataKey = searchlist,
recordCountKey = 295207
}, JsonRequestBehavior.AllowGet);

}
}

Please help. Let me know if you have any question.