Visualforce Developer Guide

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Introducing Visualforce
Tools for Visualforce Development
Getting a Quick Start with Visualforce
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
Create a Message Channel
Publish on a Message Channel
Subscribe and Unsubscribe from a Message Channel
Considerations and Limitations
Visualforce Best Practices
Standard Visualforce Component Reference
Appendices
PDF

Create a Message Channel

To create a Lightning Message Channel in your org, use the LightningMessageChannel metadata type.

See LightningMessageChannel in the Metadata API Developer Guide.

Note

To deploy a LightningMessageChannel into your org, create an Salesforce DX project. Include the XML definition in the force-app/main/default/messageChannels/ directory. The LightningMessageChannel file name follows the format messageChannelName.messageChannel-meta.xml. To add it to your scratch org, sandbox, or Developer Edition org, run the sf project deploy start Salesforce CLI command.