Question

I am planning to have a (Telerik MVC) grid in which each row has a button. On click, a boolean will be updated in the DB via ajax and the callback function will set a “checkmark” image in one of the row’s cells. The user should be able to click on multiple rows in rapid-fire fashion, and I’m trying to anticipate any problems if he does so. Is there a possibility of contention either in the DOM or in the database server?

Answer 1

To make sure that user experience does not suffer, here’s what I’d do:

• Create an array of objects to be update
• Every time an checkbox is clicked, add/update it to/in the array with the value – this will make sure that multiple clicks to the same checkbox will result in only one AJAX call
• After adding a check box to array, start the AJAX update process
• On AJAX response, check if there are any items in the array to be processed and repeat