System.Collections.SortedList.IndexOfValue C# (CSharp) Method

        public virtual int IndexOfValue(Object value)
        {
            return Array.IndexOf(_values, value, 0, _size);
        }

 public override int IndexOfValue(Object val)
 {
     lock (host.SyncRoot)
     {
         return(host.IndexOfValue(val));
     }
 }