Hi Angel,

 I tried after removing sortUrlKey and other similar properties,

The URL its posting is attached with "&pk=ID&_=1367225397270", how can i identify the Column key and Sort Order ?

and i still have similar problem with group by feature.

i'm unable to apply Sorting and Grouping on first column (Sorting and Grouping are enabled on the column), after moving the column 2 times i'm able apply sorting feature by clicking on the Column header.

Code : ---

 grdUI.igGrid({
                        columns: JSON.parse($get('<%= hdnigGridColumnSettings.ClientID %>').value),
                        autoGenerateColumns: true,
                        dataSource: [],
                        dataSourceUrl: pageUrl,
                        dataSourceType: "json",
                        fixedHeaders: true,
                        //    loadOnDemand: true,
                        //  responseDataKey: 'd',
                        //  responseDataType: "string",
                        primaryKey: "ID",
                        //enableUTCDates: true,
                        width: "810px",
                        //                        enableHoverStyles: false,
                        renderCheckboxes: true,
                        headerCellRendered: function (evt, ui) {

                            //                            ui.owner;
                            //                            ui.columnKey;
                            //                            ui.th;

                            igGrid_HeaderCellRendered(evt, ui);

                        },
                        features: [
                        {
                            name: "Sorting",
                            type: "remote",
                            //sortUrlKey: "metadata",
                            //sortUrlKeyAscValue: "asc",
                            //sortUrlKeyDescValue: "desc",
                            applySortedColumnCss: false,
                            //   customSortFunction: igGridColumnSorting,
                            columnSettings: JSON.parse($get('<%= hdnigGridSortingColumns.ClientID %>').value)//,
                         //   columnSorting: function (e, ui) { igGrid_ColumnSorting(e, ui); }
                        },
                        {
                            name: "RowSelectors",
                            enableCheckBoxes: true,
                            enableRowNumbering: false,
                            requireSelection: true,
                            showCheckBoxesOnFocus: false,
                            checkBoxStateChanged: function (evt, ui) {
                                if (ui.isHeader == true)
                                    igGrid_RowSelectorHeaderCheckedChanged(evt, ui);
                                else
                                    igGrid_RowSelectorCheckedChanged(evt, ui);
                            }
                        },
                        {
                            name: "ColumnMoving",
                            movingDialogHeight: "300px",
                            movingDialogWidth: "400px"
                        },
                        {
                            name: "Selection",
                            multipleSelection: true,
                            mouseDragSelect: false,
                            rowSelectionChanged: function (evt, ui) { igGrid_RowSelectorCheckedChanged(evt, ui, true); },
                            mode: "row"
                        },
                        //                        {
                        //                            name: "ColumnFixing",
                        //                            columnSettings: JSON.parse($get('<%= hdnigGridColumnFixing.ClientID %>').value),
                        //                            fixingDirection: "left",
                        //                            showFixButtons: false
                        //                        },
                        {
                        name: "Hiding",
                        columnSettings: JSON.parse($get('<%= hdnigGridHiddenColumns.ClientID %>').value),
                        columnChooserHeight: 350
                    },
                     {
                         name: "Resizing",
                         deferredResizing: false,
                         allowDoubleClickToResize: true
                     },
                        {
                            name: "GroupBy",
                            type: "local",
                            groupByAreaVisibility: "top",
                            initialExpand: true,
                            modalDialogHeight: 350,
                            labelDragHelperOpacity: 1,
                            columnSettings: JSON.parse($get('<%= hdnigGridGroupingSettings.ClientID %>').value),
                            modalDialogButtonApplyClick: function (evt, ui) {
                                igGroupBy_modalDialogButtonApplyClick(evt, ui);
                            }
                        }
                        ]
                });