C# ＤａｔａＧｒｉｄＶｉｅｗ 绑定Ｌｉｓｔ 無法排序問題解決方案

 /// <summary>
    /// 自定义绑定列表类
    /// </summary>
    /// <typeparam name="T">列表对象类型</typeparam>
    public class BindingCollection<T> : BindingList<T>
    {
        private bool isSorted;
        private PropertyDescriptor sortProperty;
        private ListSortDirection sortDirection;
        /// <summary>
        /// 构造函数
        /// </summary>
        public BindingCollection() : base()
        {
        }
        /// <summary>
        /// 构造函数
        /// </summary>
        /// <param name="list">IList类型的列表对象</param>
        public BindingCollection(IList<T> list) : base(list)
        {
        }
        /// <summary>
        /// 自定义排序操作
        /// </summary>
        /// <param name="property"></param>
        /// <param name="direction"></param>
        protected override void ApplySortCore(PropertyDescriptor property, ListSortDirection direction)
        {
            List<T> items = this.Items as List<T>;
            if (items != null)
            {
                ObjectPropertyCompare<T> pc = new ObjectPropertyCompare<T>(property, direction);
                items.Sort(pc);
                isSorted = true;
            }
            else
            {
                isSorted = false;
            }
            sortProperty = property;
            sortDirection = direction;
            this.OnListChanged(new ListChangedEventArgs(ListChangedType.Reset, -1));
        }
        /// <summary>
        /// 获取一个值，指示列表是否已排序
        /// </summary>
        protected override bool IsSortedCore
        {
            get
            {
                return isSorted;
            }
        }
        /// <summary>
        /// 获取一个值，指示列表是否支持排序
        /// </summary>
        protected override bool SupportsSortingCore
        {
            get
            {
                return true;
            }
        }
        /// <summary>
        /// 获取一个只，指定类别排序方向
        /// </summary>
        protected override ListSortDirection SortDirectionCore
        {
            get
            {
                return sortDirection;
            }
        }
        /// <summary>
        /// 获取排序属性说明符
        /// </summary>
        protected override PropertyDescriptor SortPropertyCore
        {
            get
            {
                return sortProperty;
            }
        }
        /// <summary>
        /// 移除默认实现的排序
        /// </summary>
        protected override void RemoveSortCore()
        {
            isSorted = false;
            this.OnListChanged(new ListChangedEventArgs(ListChangedType.Reset, -1));
        }
    }

 

public class ObjectPropertyCompare<T> : IComparer<T>
    {
        private PropertyDescriptor property;
        private ListSortDirection direction;
        // 构造函数
        public ObjectPropertyCompare(PropertyDescriptor property, ListSortDirection direction)
        {
            this.property = property;
            this.direction = direction;
        }
        // 实现IComparer中方法
        public int Compare(T x, T y)
        {
            object xValue = x.GetType().GetProperty(property.Name).GetValue(x, null);
            object yValue = y.GetType().GetProperty(property.Name).GetValue(y, null);
            int returnValue;
            if (xValue is IComparable)
            {
                returnValue = ((IComparable)xValue).CompareTo(yValue);
            }
            else if (xValue == yValue)
            {
                returnValue = 0;
            }
            else
            {
                returnValue = xValue.ObjToString().CompareTo(yValue.ObjToString());
            }
            if (direction == ListSortDirection.Ascending)
            {
                return returnValue;
            }
            else
            {
                return returnValue * -1;
            }
        }
    }

 

new BindingCollection<model对象>(models);