List<T> 排序

List<T> 排序

不说什么了，直接贴代码

  1 //Compare records  by selected column
  2    internal class ListComparer<T> : IComparer<T>
  3    {
  4        private string propertyName;
  5
  6        public ListComparer(string PropertyName)
  7        {
  8            propertyName = PropertyName;
  9        }
 10
 11        IComparer Members#region IComparer<TBaseBusinessObject> Members
 12
 13        public int Compare(T x, T y)
 14        {
 15            PropertyInfo property = typeof(T).GetProperty(propertyName);
 16            if (property.PropertyType == Type.GetType("System.Int16"))
 17            {
 18                int xNumber = 0;
 19                int yNumber = 0;
 20                if (property.GetValue(x, null) != null)
 21                {
 22                    xNumber = Convert.ToInt16(property.GetValue(x, null).ToString());
 23                }
 24                if (property.GetValue(y, null) != null)
 25                {
 26                    yNumber = Convert.ToInt16(property.GetValue(y, null).ToString());
 27                }
 28                return xNumber.CompareTo(yNumber);
 29            }
 30            if (property.PropertyType == Type.GetType("System.Int32"))
 31            {
 32                int xNumber = 0;
 33                int yNumber = 0;
 34                if (property.GetValue(x, null) != null)
 35                {
 36                    xNumber = Convert.ToInt32(property.GetValue(x, null).ToString());
 37                }
 38                if (property.GetValue(y, null) != null)
 39                {
 40                    yNumber = Convert.ToInt32(property.GetValue(y, null).ToString());
 41                }
 42                return xNumber.CompareTo(yNumber);
 43            }
 44            if (property.PropertyType == Type.GetType("System.Decimal"))
 45            {
 46                double xNumber = 0;
 47                double yNumber = 0;
 48                if (property.GetValue(x, null) != null)
 49                {
 50                    xNumber = Convert.ToDouble(property.GetValue(x, null).ToString());
 51                }
 52                if (property.GetValue(y, null) != null)
 53                {
 54                    yNumber = Convert.ToDouble(property.GetValue(y, null).ToString());
 55                }
 56                return xNumber.CompareTo(yNumber);
 57            }
 58            if (property.PropertyType == Type.GetType("System.Double"))
 59            {
 60                double xNumber = 0;
 61                double yNumber = 0;
 62                if (property.GetValue(x, null) != null)
 63                {
 64                    xNumber = Convert.ToDouble(property.GetValue(x, null).ToString());
 65                }
 66                if (property.GetValue(y, null) != null)
 67                {
 68                    yNumber = Convert.ToDouble(property.GetValue(y, null).ToString());
 69                }
 70                return xNumber.CompareTo(yNumber);
 71            }
 72            if (property.PropertyType == Type.GetType("System.DateTime"))
 73            {
 74                DateTime xTime = DateTime.Now;
 75                DateTime yTime = DateTime.Now;
 76                if (property.GetValue(x, null) != null)
 77                {
 78                    xTime = Convert.ToDateTime(property.GetValue(x, null).ToString());
 79                }
 80                if (property.GetValue(y, null) != null)
 81                {
 82                    yTime = Convert.ToDateTime(property.GetValue(y, null).ToString());
 83                }
 84                return xTime.CompareTo(yTime);
 85            }
 86            if ((property.PropertyType == Type.GetType("System.String")) || 
 87                (property.PropertyType == Type.GetType("System.Boolean")))
 88            {
 89                string xText = string.Empty;
 90                string yText = string.Empty;
 91                if (property.GetValue(x, null) != null)
 92                {
 93                    xText = property.GetValue(x, null).ToString();
 94                }
 95                if (property.GetValue(y, null) != null)
 96                {
 97                    yText = property.GetValue(y, null).ToString();
 98                }
 99                return xText.CompareTo(yText);
            }
            return 0;

        }

        #endregion
    }

    //Sort list by sort field and  sortDirection.
    public class SortList<T>
    {
        public static void Sort(List<T> list, string sortfield, bool isAscending)
        {
            ListComparer<T> listComparer = new ListComparer<T>(sortfield);
            list.Sort(listComparer);
            if (!isAscending) list.Reverse();
        }
    }

 

我们调用的时候，直接排序

 SortList<Model>.Sort(IListModel as List<Model>, "Name", true);