C#-几个STL相关

C#结构体排序

1.................................................
声明 
struct data
{
public string A;
public string B;
}
创建测试数据
data[] st = new data[4] 
{ 
new data() { A = "CC", B = "003" },
new data() { A = "BB", B = "002" }, 
new data() { A = "DD", B = "005" }, 
new data() { A = "AA", B = "007" }
};
按照 data.B 顺序排列
data[] basc = st.OrderBy(P => P.B).ToArray<data>();
按照 data.B 倒序排列
data[] bdesc= st.OrderByDescending(P => P.B).ToArray<data>();

2..........................................................
  struct  data:IComparable<data>
    {   string  A;
        string  B;
        public int CompareTo(data d){
            return this.B.CompareTo(d.B);
        }
    }

队列

DirectoryInfo tou = null, xin = null;//文件类型
xin = (Dir