How can I integrate ASP.NET MVC unobtrusive validation and Twitter Bootstrap? I want to have all those validation messages and styles appropria
I suggest to include Bootstrapper in less format and do the same thing as Iridio suggested but in .less. That way you could have something like:
.validation-summary-errors
{
.alert();
.alert-error();
}
.field-validation-error
{
.label();
.label-important();
}
so when bootstrapper will change you'll pick up the changes automatically.
Regular styles that handle visibility from MVC default Site.css
will stay in place and handle visibility.