c# – 需要更好的方法来总结数据

public class ConnectionResult
{
  private int connectionPercentage;

  public int ConnectPercentage
  {
     get { return connectionPercentage; }
  }

  public ConnectionResult(int ip)
  {
     // Check connection and set connectionPercentage
  }
}

并且我有一个经理可以获得ConnectionResult的几个列表,并对每个值进行计数,然后再按配置确定的特定数字.我的实现是这样的：

public class CurrentConnections
{
  private static CurrentConnections inst;

  private CurrentConnections()
  {

  }

  public static CurrentConnections GetInstance
  {
     get
     {
        if (inst != null)
        {
           inst = new CurrentConnections();
        }
        return inst;
     }
  }

   public int CountActiveConnections(params List<ConnectionResult>[] conns)
   {
     int rtVal = 0;

     foreach (List<ConnectionResult> connectionResult in conns)
     {
        foreach (var currConn in connectionResult)
        {
           if (currConn.ConnectPercentage > ACCEPTABLE_CONNECTION)
           {
              rtVal++;
           }
        }
     }

     return rtVal;
  }
}

但是我想让它更好,所以我开始写在linq,我得到了

conns.Count(x => x.Count(y => y.ConnectPercentage > ACCEPTABLE_CONNECTION));

但是这给我一个错误,不能将类型’int’隐式转换为’bool’.
有没有办法计算在linq或我必须留下我写的？
btw,我是linq的新手