OnCommand

Updated on Nov 2, 2026

Telerik.Web.UI.GridCommandEventArgs OnCommand Property

To get or set property values for client API properties, you must call property accessor methods that are named with the get_ and set_ prefixes. For example, to get or set a value for a property such as cancel, you call the get_cancel or set_cancel.

This event will be raised for each grid command which is about to be triggered (sorting, paging, filtering, editing, etc.) before postback/ajax request except hierarchy/grouping expand/collapse action. The event can be intercepted in order to perform a certain operation in the grid via web service or to detect what type of command is raised on the client.

Fired by	RadGrid
Arguments	commandName - the name of the command which is about to be processed commandArgument - the command argument(s) value(s) tableView - returns reference to the owner TableView
Can be canceled	Yes, set eventArgs.set_cancel(true) to cancel

The client-side GridCommandEventArgs does not expose the clicked button or a CommandSource property. For Edit and Delete commands, the commandArgument is the item index. You can use it with the tableView to retrieve the corresponding data item when client-side binding is used:

JavaScript

 function onCommand(sender, args) {
    var commandName = args.get_commandName();

    if (commandName == "Edit" || commandName == "Delete") {
        var itemIndex = args.get_commandArgument();
        var dataItem = args.get_tableView().get_dataItems()[itemIndex].get_dataItem();
    }
}

If you need the clicked button element itself, handle the button's click separately and resolve its parent row from the DOM. The server-side CommandSource and Item properties do not have client-side equivalents in OnCommand.

Example:

ASP.NET

<telerik:RadGrid RenderMode="Lightweight" ID="RadGrid1" runat="server">
    <ClientSettings>
        <ClientEvents OnCommand="RaiseCommand" />
    </ClientSettings>
</telerik:RadGrid>

JavaScript

function RaiseCommand(sender, eventArgs)
{
    //retrieve the current commandName and commandArgument
    var result = String.format("CommandName: {0}, CommandArgument: {1}", eventArgs.get_commandName(), eventArgs.get_commandArgument());

    if (<some_custom_condition_not_met>)
    {
        eventArgs.set_cancel(true); //cancel the command
    }
}

How to prevent loss of user input in batch editing mode

JavaScript

function OnCommand(sender, args) {
	var tableView = args.get_tableView();
	var batchEditingManager = sender.get_batchEditingManager();
	var isDirty = batchEditingManager.hasChanges(tableView);
	var commandName = args.get_commandName();
	//allow the user to cancel changes always
	//if there are changes allow the user only to save changes 
	var shouldAllowOperation = commandName == "RebindGrid" || !(isDirty && commandName != "BatchEdit");
	args.set_cancel(!shouldAllowOperation);
	
}