In Visualforce, to reference an Apex method in the component markup, you must bind an Apex contoller to the Visualforce page. We do this by specifying it as an attribute in the <apex:page> tag.
Here's an example of how to do this:
<apex:page controller="MyController"> <!-- page content goes here --> </apex:page>
In this example, MyController is the name of the Apex controller class that you want to bind to the Visualforce page.
You can also specify multiple controllers by separating them with a comma, like this:
<apex:page controller="MyController1, MyController2"> <!-- page content goes here --> </apex:page>
It's important to note that the Apex controller class must be defined in your organization before you can bind it to a Visualforce page.
public with sharing class MyController { // controller logic goes here }
Once you have defined your Apex controller class and specified it in the <apex:page> tag, you can use the controller's methods and variables in your Visualforce page to control the page's behavior and display dynamic content.