javascript - Preventing editing a row in kendo grid? -

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i using kendo grid , while editing row checking whther row editable or not.so how make selected row non editable if not editable.i doing checking in edit function of grid.

code

$("#grid").kendogrid({     datasource : ds,     selectable : "multiple",     sortable   : true,     filterable : false,     reorderable: true,     scrollable : false,     toolbar    : ["create"],     columns: [                 { field: "event", width: "120px", title: "event type"},                 { field: "event_id", width: "120px", title: "event id"},                 { field: "addr_no_or_type", width: "120px", title:"address"},                 { field: "event_rate", width: "100px", title: "rate"},                 { field: "sched_date", width: "100px", title: "scheduled"},                 { field: "complete_date", width: "100px", title:"completed"},                 { field: "serial_no", width: "100px", title: "serial #"},                 { command: ["edit", "destroy"], title: "options", width: "170px"}             ],     editable: "inline",     edit    : function(e){         selectedrowindex        =   $("#grid").data("kendogrid").select().index();         if (selectedrowindex >= 0) {             var grid            =   $("#grid").data("kendogrid");             var selecteditem    =   grid.dataitem(grid.select());             var slno            =   selecteditem.serial_no;             if(slno!=0){                 grid.cancelrow();             }         }     } });

but when use i'm getting following error in console.

uncaught typeerror: cannot call method 'delegate' of null

can suggest method resolve it.thank you.

in current case suggest use databound event iterate on datasource view data , check if current record met given condition disable it's edit button:

function ondatabound(e) {     //this solution makes rows editable / not editable     var grid = e.sender;     var data = grid.datasource.view();      (var = 0; < data.length; i++) {         //check custom condition         if (data[i].orderid % 2 == 0) {             var editbutton = grid.tbody.find("tr[data-uid='" + data[i].uid + "'] .k-grid-edit");             editbutton.addclass("k-state-disabled").removeclass("k-grid-edit");             //or             //grid.tbody.find("tr[data-uid='" + data[i].uid + "'] .k-grid-edit").remove();         }     } }

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