Hi guys, i'm trying to display a field only if it's not empty. It works when not empty, but I got a macro error when empty. So, if in the foreach there's a result with empty "matiere", I got a error...

What I do wrong?

@foreach (var r in results.Skip(currentPage*10).Take(10))
    
{            
 
                 <p>
             <a href="@umbraco.library.NiceUrl(r.Id)"><strong>@r.Fields["nodeName"]</strong></a><br />
             <small>Matière : if(!String.IsNullOrEmpty(@r.Fields["matiere"])){@r.Fields["matiere"]}</small>    
       </p>  
}