Can we use standard controller and custom controller together?

Can we use standard controller and custom controller together?

We can use Stnadard controller/ Custom Controller and extensions at a time. But we cannot use Standard controller & Custom controller at a time.

How do I use a standard and custom controller in Visualforce page?

Add a custom controller to a Visualforce page by referencing the name of the controller class in the controller attribute. When your page uses a custom controller, you can’t use a standard controller. Pages use a different attribute to set the custom controller.

What is standard controller in VF?

A Visualforce controller is a set of instructions that specify what happens when a user interacts with the components specified in associated Visualforce markup, such as when a user clicks a button or link.

How to create apex Test class for VF pages?

The class constructor takes a single argument of type ApexPages.StandardController or C ustomControllerName, where CustomControllerName is the name of a custom controller you want to extend. Controller extensions like all Apex codes should be covered by unit tests.

How to create an apex class for a controller extension?

A controller extension is an Apex class that extends the functionality of a standard or custom controller. The class constructor takes a single argument of type ApexPages.StandardController or C ustomControllerName, where CustomControllerName is the name of a custom controller you want to extend.

Why does apex controller run in system mode?

Like other Apex classes, controller extensions run in system mode. Consequently, the current user’s credentials are not used to execute controller logic, and the user’s permissions and field-level security do not apply.

Which is an example of a controller extension?

A controller extension is any Apex class containing a constructor that takes a single argument of type ApexPages.StandardController or CustomControllerName, where CustomControllerName is the name of a custom controller you want to extend. The following class is a simple example of a controller extension: