MVC :: Extend The HtmlHelper By Using Metadata / Access Metadata In HtmlHelper Extension Method?

Jan 9, 2010

I would like to extend the HtmlHelper by using metadata (similar to DataAnnotaions metadata). Specifically I want to be able to add a 'Title' attribute to html controls that will then appear as a tooltip on the control. I would like to keep the tooltip text with my model, for example by adding 'Tiltle' metadata to the model as follows:

[DisplayName("User Id")]
[Title("Enter your 10 digit user id")]
property UserId { get; set; }

So the questions are:

1. How do I add metadata (such as 'Title') to my model?

2. How do I access this metadata in my HtmlHelper extension method?


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