Event Identification

[crystalized]

Hello All,

I have been looking but have not found what I am looking for. I am wondering if it is possible in the page load event to know what event or action triggered the postback that is happening.

So if I have a button on the page with a click event handler, can I tell in the page load if the button triggered the postback or if it was something else that triggered the postback?

If anyone can direct me to a relevant resource or provide a little snippet I would be very appreciative. Crystal
crystalized_s@yahoo.com

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Experience is one thing you can't get for nothing.

-Oscar Wilde

 

[link9]

No, I'm afraid not... events are raised after the page_load event.

The best workaround for this that I have found for this (if you just can't wait -- which would be best) is to have the button clicked set a variable, which you can evaluate with request.form() in the page_load.

Be warned, however. I started down this path, and before long, your .NET code is as hard to read as your asp classic was. It's really a nightmare -- with this object and that object all floating around everywhere. **shivers**

What specifically do you need, and maybe we can help you to formulate a strategy to get it done w/o doing it the "wrong" way.


paul

 

[crystalized]

Basically what I need to accomplish is for my page to do a task when a checkbox is clicked. Using a web control with autopostback allowed me to complete this task however it also causes the postback code to execute in the page. So in my postback code I needed a way to branch based on whether the page was postbacked due to the checkbox or due to the person doing something else (hitting enter, clicking a button etc)

So in the end what I did was this:
1. Added an onclick attribute to the checkbox,
2. Set the autopostback on the checkbox to false,
3. Wrote a javascript function that changed a hidden html element value based on the checkbox state before submitting the page,
4. In my code behind I declared a variable representing the hidden html element,
5. In my page load I do a test on the value of the hidden control and branch based on the value.
6. Removed the eventhandler for the checkbox control.

In the end I think this was a case of me relying on some of the built in functionality to make things easy (autopostback) - where it really was not appropriate to do so.
Crystal
crystalized_s@yahoo.com

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Experience is one thing you can't get for nothing.

-Oscar Wilde