Find all needed information about Selectoptions Actionsupport. Below you can see links where you can find everything you want to know about Selectoptions Actionsupport.
https://developer.salesforce.com/docs/atlas.en-us.pages.meta/pages/pages_compref_actionSupport.htm
apex:actionSupport A component that adds AJAX support to another component, allowing the component to be refreshed asynchronously by the server when a particular event occurs, such as …
https://developer.salesforce.com/docs/atlas.en-us.pages.meta/pages/pages_compref_selectOptions.htm#!
A collection of possible values for an <apex:selectCheckBoxes >, <apex:selectRadio >, or <apex:selectList > component. An <apex:selectOptions > component must be a child of one of those components. It must also be bound to a collection of selectOption objects in a custom Visualforce controller. This component supports HTML pass-through attributes using the "html-" prefix.
https://salesforce.stackexchange.com/questions/211118/actionsupport-on-apexselectlist-in-table-not-called
I have 2 selectList on each row of a table. When the first one is changed, I need to modify the selectOptions of the second one. Currently, the ActionSupport is only called on one line and if the second selectList is changed from Null to any value.
https://success.salesforce.com/answers?id=90630000000hujvAAA
Jun 10, 2014 · see, i am trying something different than this. i am trying to make a checkbox dynamically and on the basis of selected checkboxes (because user can check either one or multiple checkbox) show another checkboxes that is agian dynamcally created like this following scenario:
https://salesforce.stackexchange.com/questions/197859/apexactionsupport-not-calling-controller-method
I've removed the onsubmit and oncomplete parameters, and the controller method is still not being triggered. From my understanding, these methods should fire before and after the AJAX request, so I don't know why they would conflict with the action parameter. I also tried refactoring the call into an <apex:actionFunction>, but that also did not trigger the controller method.
https://www.salesforcetutorial.com/salesforce-picklist-example-visualforce-page/
Picklist: Example 2: Dependent Picklist Preparation using Controller:...., Example 1: Getting all names of an account in to a Picklist
https://success.salesforce.com/answers?id=90630000000h1YfAAI
Feb 18, 2013 · Hi Swamy, Errors in your code were, 1) you were running onChange for selectOption, but onChange should be for SelectList 2) you were using list of String instead of List of SelectOption
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