The OnRequesting client-side event occurs when data is requested form the web service.

The event handler receives two parameters:

  • sender - an instance of the datasource;

  • args -containing the following methods:

  • get_modelName()- returns the model for which the event is fired;

  • get_options() - returns the parameters object that will be sent to the service.

  • set_filterExpression() - sets filters for the request;

  • set_pageIndex() - sets the page index;

  • set_pageSize() - sets the page size;

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