IEnumerable doesn't have a Count method

Question

I have the following method:

public bool IsValid
{
  get { return (GetRuleViolations().Count() == 0); }
}

public IEnumerable GetRuleVio         


        

Answer 1

How about:

public bool IsValid
{
    get { return (GetRuleViolations().Cast().Count() == 0); }
}