Visualforce Developer Guide

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Introducing Visualforce
Tools for Visualforce Development
Getting a Quick Start with Visualforce
Compile Visualforce Successfully
Creating Your First Page
Displaying Field Values with Visualforce
Using the Visualforce Component Library
Override an Existing Page with a Visualforce Page
Redirecting to a Standard Object List Page
Using Input Components in a Page
Adding and Customizing Input Field Labels
Setting the Tab Order for Fields in a Form
Adding Dependent Fields to a Page
Create Visualforce Dashboard Components
Displaying Related Lists for Custom Objects
Enabling Inline Editing
Converting a Page to a PDF File
Building a Table of Data in a Page
Editing a Table of Data in a Page
Using Query String Parameters in a Page
Use Ajax in a Page
Put Visualforce Pages on External Domains
Customizing the Appearance and Output of Visualforce Pages
Standard Controllers
Standard List Controllers
Custom Controllers and Controller Extensions
Advanced Examples
Override Buttons, Links, and Tabs with Visualforce
Using Static Resources
Creating and Using Custom Components
Dynamic Visualforce Bindings
Dynamic Visualforce Components
Integrate Email with Visualforce
Visualforce Charting
Creating Maps with Visualforce
Render Flows with Visualforce
Templating with Visualforce
Developing Salesforce Apps with Visualforce
Adding Visualforce to a Salesforce AppExchange App
Using JavaScript in Visualforce Pages
Communicating Across the DOM with Lightning Message Service
Visualforce Best Practices
Standard Visualforce Component Reference
Appendices
PDF

Building a Table of Data in a Page

Some Visualforce components, such as <apex:pageBlockTable> or <apex:dataTable>, allow you to display information from multiple records at a time by iterating over a collection of records. To illustrate this concept, the following page uses the <apex:pageBlockTable> component to list the contacts associated with an account that is currently in context:

<apex:page standardController="Account">
   <apex:pageBlock title="Hello {!$User.FirstName}!">
      You are viewing the {!account.name} account.
   </apex:pageBlock>
   <apex:pageBlock title="Contacts">
      <apex:pageBlockTable value="{!account.Contacts}" var="contact">
         <apex:column value="{!contact.Name}"/>
         <apex:column value="{!contact.MailingCity}"/>
         <apex:column value="{!contact.Phone}"/>
      </apex:pageBlockTable>
   </apex:pageBlock>
</apex:page>

Remember, for this page to display account data, the ID of a valid account record must be specified as a query parameter in the URL for the page. For example: 

https://MyDomain_login_URL/apex/myPage?id=001x000xxx3Jsxb

Note

The <apex:pageBlockTable> Component The apex:pageBlockTable component displayed in the Visualforce code window. The page view displays 3 contact columns.
Like other iteration components, <apex:pageBlockTable> includes two required attributes, value and var:
  • value takes a list of sObject records or values of any other Apex type. In the example above, {!account.Contacts} retrieves the ID of the account that is currently in context and then traverses the relationship to retrieve the list of the associated contacts.
  • var specifies the name of the iteration variable. This variable is used within the body of the <apex:pageBlockTable> tag to access the fields on each contact. In this example, value="{!contact.Name}" is used on the <apex:column> tag to display the name of the contact.

The <apex:pageBlockTable> component takes one or more child <apex:column> components. The number of rows in the table is controlled by the number of records returned with the value attribute.

The <apex:pageBlockTable> component automatically takes on the styling of a standard Salesforce list. To display a list with your own styling, use <apex:dataTable> instead.

Note