ASP。NET MVC:数据注释验证足够吗?

I'm using the Data Annotation validation extensively in ASP.NET MVC 2. This new feature has been a huge time saver, as I'm now able to define both client-side validation and server-side validation in one place. However, while I was doing some detailed testing, I realized that it's quite easy for someone to bypass the server-side validation if I relied on Data Annotation validation alone. For example, if I defined a required field by annotating the property with the [Required] attribute and placed a textbox for that required field in a form, a user could simply remove the textbox from the DOM (which can easily be done through Firebug) and now the Data Annotation validation will not be triggered on that property during ModelBinding inside of a Controller. To ensure that the "required" validation is triggered, I can repeat the validation after ModelBinding happens, but then I'd be repeating my validation logic.I'm using the Data Annotation validation extens