Hi,

I need to use a scenario like this:

• there is a web screen and a webblock on this screen
• this webblock gathers some input from the user
• there is also a button on the screen that is to store data, entered by the user, somewhere - e.g. in some database

I don't want to constantly send entered data to the screen, using Input's OnChange event. Let's assume that these data are not validated - using OnChange would produce unnecessary net traffic. Therefore I need to be able to explicitly ask the webblock for the user's data.

It was easy in OS 10: 

• I add a parameter to the webblock (text, "Command")
• the screen's button sets this parameter to "Get Data" and refreshes the webblock
• in Preparation of the webblock I detect this value of Command and do nothing else than packaging all the data to a string (any way) and sending it to the screen using Notify action

It works perfectly and synchronously (refresh webblock -> get its data -> refresh another webblock -> get its data -> store all to the database; all this as a sequence in a single button's handler).

Now the Notify action is deprecated so I don't want to use it. I should use Events instead of Notify. But - I can't use Event in Preparation: I'm not allowed, I can't drop an Event on Preparation.

I've found a hint. how to invoke a webblock's event from a screen:

• put a hidden button on the webblock, mark it with a dedicated CSS class
• in the screen button's handler run some JavaScript that "clicks" (using jQuery) this hidden button
• in the handler of this button raise the required Event

OK, it works. But with some difference: it is asynchronous. I mean that the handler of the screen button must end before the webbloks button is clicked. And this makes this technique in my scenario useless.

Any idea?

Regards

Tomasz