This demo illustrates the content validation capabilities available to you within the DevExpress MVC HTML Editor. You can define Editor content validation logic - both on the client and server - via any of the following methods:
You are free to combine these methods together to augment validation rules when required. Additional validation options can be specified via the Editor's SettingsValidation property. Among others, there are options for an error frame, which is displayed within the editor's Design View when the Editor fails validation. These options allow you to specify both error description and appearance settings. In addition, you can dynamically customize error descriptions within validation event handlers.