.NET 4.x Warning CS0162: Обнаружен недостижимый код - C#

          for (int index = 0; index < cmd.Parameters.Count; ++index)
          {
            FbParameter fbParameter = cmd.Parameters[index];
            string str2 = fbParameter.ParameterName.Trim().ToUpper();
            switch (str2)
            {
              case "ERR":
              case "INFO":
                goto case "ERR";
              default:
                if (fbParameter.Direction == ParameterDirection.ReturnValue)
                {
                  str1 = str1 + "\n" + str2 + "=" + fbParameter.Value.ToString();
                  goto case "ERR";
                }
                else
                  goto case "ERR";
            }
          }