JustCode display bad warning: This cast is not required

[Michał]

Hello,

JustCode display bad warning that cast is not required if I try to cast object type to dynamic.
Example:

[AttributeUsage(AttributeTargets.Property | AttributeTargets.Field | AttributeTargets.Parameter, AllowMultiple = false)]
public class PositiveRequiredAttribute : RequiredAttribute
{
    protected override ValidationResult IsValid(object value, ValidationContext validationContext)
    {
        ValidationResult result = ValidationResult.Success;
        try
        {
            if ((dynamic)value <= 0) // here JustCode display warning
            {
                result = new ValidationResult(this.FormatErrorMessage(validationContext.DisplayName), new string[] { validationContext.MemberName });
            }
        }
        catch
        {
            result = new ValidationResult(this.FormatErrorMessage(validationContext.DisplayName), new string[] { validationContext.MemberName });
        }
        return result;
    }
}

PS.
I tried to post bug report by Public Issue Tracker but it redirect me to this page:
http://www.telerik.com/account/support-tickets.aspx

Regards,
Michał Zalewski

[Kaloyan]

Hi Michał,

Yeah, that's a good-code-yellow condition you got there. I'll add it to our backlog for a future fix. You get some telerik points for the observation. Stay tuned for an update on the matter.

All the best,
Kaloyan
the Telerik team