list<T> Sort 排序

1- 类GCD

 

 public class GCD:IComparable
    {
        //高程点X坐标
        private double gcdX;

        public double GcdX
        {
            get { return gcdX; }
            set { gcdX = value; }
        }
        //高程点Y坐标
        private double gcdY;

        public double GcdY
        {
            get { return gcdY; }
            set { gcdY = value; }
        }
        //高程点高程
        private double gcdH;

        public double GcdH
        {
            get { return gcdH; }
            set { gcdH = value; }
        }
        //高程点实测点号，即展点号
        private string  gcdSCDH;

        public string  GcdSCDH
        {
            get { return gcdSCDH; }
            set { gcdSCDH = value; }
        }       
        
        //高程点投影到断面线上的点到断面零点的距离：起点距
        private double gcdQDJ;

        public double GcdQDJ
        {
            get { return gcdQDJ; }
            set { gcdQDJ = value; }
        }

        //高程点与断面线的垂直距离：偏距
        private double gcdPJ;


        public double GcdPJ
        {
            get { return gcdPJ; }
            set { gcdPJ = value; }
        }
        /// <summary>
        /// 高程点与断面零点距离：斜距
        /// </summary>
        private double gcdXj;

        public double GcdXj
        {
            get { return gcdXj; }
            set { gcdXj = value; }
        }
        //高程点与断面零点的方位角
        private double gcdDWJ;

        public double GcdDWJ
        {
            get { return gcdDWJ; }
            set { gcdDWJ = value; }
        }

        public int CompareTo(object obj)
        {
            if (obj is GCD)
            {
                GCD gcd = obj as GCD;
                return this.gcdQDJ.CompareTo(gcd.gcdQDJ);
            }
            throw new NotImplementedException("数据不是一个高程点");
        }
    }

2--定义一个List<GCD> gcdDic = new List<GCD>();

使得gcdDic按照GcdQDJ排序，要使用List<T>中的Sort方法，T 必须实现IComparable接口，上述代码有所体现。

3-在程序中直接调用gcdDic.Sort()即可。

4- 显示结果

cd(s)
非数字       9.73
-54.5       10.72
-51.0       10.70
-51.0       10.70
-49.7       10.62
-47.3       8.69
-45.5       8.34
-44.0       7.76
-42.6       7.76
-41.1       8.30
-40.0       8.69
-40.0       8.69
-37.7       10.20
-37.7       10.20
-34.8       10.49
-31.4       10.49
-29.2       10.04
-21.2       6.78
-20.3       6.30
-19.2       5.94
-18.2       5.76
-17.0       5.60
-15.2       5.53
-12.7       5.53
-11.0       5.67
-10.0       5.90
-9.0       6.20
-8.0       6.78
-5.1       8.62
-5.0       8.62
-2.3       8.88
-2.3       8.88
0.0       9.73
6.4       9.77
10.0       9.12
15.6       9.12
18.7       7.80
21.9       7.65
21.9       7.65
24.0       7.43