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有什么建议吗?:)

来自注释的格式化代码。。。

...
else if (backedges.Count > 1) 
{ 
    foreach (Side side in backedges) 
    {
        Node end = Side.node2; 
        Node begin = Side.node1; 
        List<Side> allsidesycle = new List<Side>();
        while (begin != Side.node2) 
        {
            end = begin;
            begin = begin.pi; 
            Side be = new Side(begin, end); 
            allsidescycle.Add(be); 
        }