c# - 使用 Linq 更新列表

Question

假设我有一些这样的对象:

Class NetworkSwitch
{  
   private String _name; 
   String name { get {return _name;} set {_name=value;}}
   Dictionary<int, VLAN> VLANDict = new Dictionary<int, NetworkSwitch>();

public List<CiscoSwitch> GetAllNeigbors()
         {
           List<CiscoSwitch> templist = new List<CiscoSwitch>();

        foreach (KeyValuePair<int, CiscoVSAN> vlanpair in this.VLANDict)
        {

            templist.AddRange((vlanpair.Value.NeighborsList.Except(templist, new SwitchByNameComparer())).ToList());
        }
        return templist;
}

Class VLAN
{ 
  private Int _VLANNum;
  Int VLANNum {get {return _VLANNum ;} set {_VLANNum =value;}}

  //a neighbor is another switch this switch is connected to in this VLAN
  // the neighbor may not have all same VLANs
  List<NetworkSwitch> Neighbors = new List<NetworkSwitch>();
}

以上是这样设计的，因为物理连接的两个交换机可能没有分配所有相同的 VLAN。我正在尝试做的是逐步浏览给定交换机上每个 VLAN 中的邻居列表，如果名称与输入列表中的名称匹配，则更新对另一台交换机的引用。这是我尝试过的，但无法编译。我想知道 LINQ 是否可以以某种方式就地完成它，或者是否有更好的方法。

// intersect is the input list of NetworkSwitch objects
//MyNetworkSwitch is a previously created switch

foreach (NetworkSwitch ns in intersect)
{
  foreach (KeyValuePair<int, VLAN> vlanpair in MyNetworSwitch.VLANDict)
  {
      foreach (CiscoSwitch neighbor in vlanpair.Value.Neighbors)
      {   // this is the line that fails - I can't update neighbor as it is part of the foreach
          if (ns.name == neighbor.name) { neighbor = ns; }
      }
  }
}

另一个问题 - 我添加了获取 NetworkSwitch 对象的所有邻居的方法。假设我要获取该列表，然后使用对同名交换机的不同实例的引用更新它，这会更新 VLAN 中 NetworkSwitch 对象的引用吗？

Answer 1

像这样的东西应该可以工作:

        foreach (NetworkSwitch ns in intersect) 
        {   
            foreach (KeyValuePair<int, VLAN> vlanpair in ns.VLANDict)
            {
                if(vlanpair.Value.Neighbors.RemoveAll(n => n.name == ns.name) > 0)
                    vlanpair.Value.Neighbors.Add(ns);
            } 
        }