System.Data.Common.ADP.ArgumentNull C# (CSharp) Méthode

        static internal ArgumentNullException ArgumentNull(string parameter)
        {
            ArgumentNullException e = new ArgumentNullException(parameter);
            return e;
        }
        static internal ArgumentNullException ArgumentNull(string parameter, string error)

 internal void AddPermissionEntry(DBConnectionString entry)
 {
     if (null == entry)
     {
         throw ADP.ArgumentNull("entry");
     }
     if (!entry.ContainsPersistablePassword() || (entry.GetType() != typeof(DBConnectionString)))
     {
         entry = new DBConnectionString(entry, true);
     }
     AddEntry(entry);
     _isUnrestricted = false; // MDAC 84639
 }