You are creating a view for an MVC application. You need to create a non-standard HTML control that should be rendered on the server. You must minimize the amount of client and server resources used as well as your development time.

Which approach should you choose?

HtmlHelper extensions allow you to create custom Html methods that render HTML code as strings. They are rendered on the server but do not require view state, so they are relatively efficient.

Custom Web Parts require extra development and consume more client and server resources than an HtmlHelper extension.