onBeforeLoad

fires immediately before data loading has started

function onBeforeLoad(): boolean

Returns

boolean returning false will prevent data loading

Example

mygrid.attachEvent("onBeforeLoad", function(){
    console.log("Loading...");
    return true;
});

also check the next samples:

• Loading Screen

Details

Returning false from the event handler will block further processing.

See also

Articles

• Loading Screen

API

• onAfterLoad