解決DataGridView綁定List後不能排序的問題

以前不都是用table直接綁定DataGridView的，沒有出現過不能排序的問題，初試List結果發現不管怎麼樣都不能實現排序的功能，有朋友說 DataGridView每一列都有個Sortable，默認Automatic，改成NotSortable了，結果怎樣，還是不行啦。 還有朋友說， 你可以拖一個bindingsource控件. bindingsource.datasource=泛型集合 datagridview.datasource=bindingsource; 我發現也是不行，那要怎麼辦呢？查一下資料才知道 用泛型會失去DateTable的特性，要實現System.Collections.Generic.IComparer 才能實現排序 沒有辦法只能實現 一把了 看一下下面的代碼吧， 基本 是這樣的 代碼 using System; using System.ComponentModel; using System.Collections.Generic; using System.Reflection; namespace BaseFunction { class ObjectPropertyCompare : System.Collections.Generic.IComparer { private PropertyDescriptor property; private ListSortDirection direction; public ObjectPropertyCompare(PropertyDescriptor property, ListSortDirection direction) { this.property = property; this.direction = direction; } #region IComparer /// /// 比較方法 /// /// 相對屬性x /// 相對屬性y /// 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.Equals(yValue)) { returnValue = 0; } else { returnValue = xValue.ToString().CompareTo(yValue.ToString()); } if (direction == ListSortDirection.Ascending) { return returnValue; } else { return returnValue * -1; } } public bool Equals(T xWord, T yWord) { return xWord.Equals(yWord); } public int GetHashCode(T obj) { return obj.GetHashCode(); } #endregion } } 在實現了這個接口之後還不能急，我們還要來寫一個SortableBindingList :BindingList 的類用來綁定數據 基本實現 代碼 using System; using System.ComponentModel; using System.Collections.Generic; using System.IO; using System.Runtime.Serialization.Formatters.Binary; using System.Text; namespace BaseFunction { public class BindingCollection : BindingList { private bool isSorted; private PropertyDescriptor sortProperty; private ListSortDirection sortDirection; protected override bool IsSortedCore { get { return isSorted; } } protected override bool SupportsSortingCore { get { return true; } } protected override ListSortDirection SortDirectionCore { get { return sortDirection; } } protected override PropertyDescriptor SortPropertyCore { get { return sortProperty; } } protected override bool SupportsSearchingCore { get { return true; } } protected override void ApplySortCore(PropertyDescriptor property, ListSortDirection direction) { List items = this.Items as List; if (items != null) { ObjectPropertyCompare pc = new ObjectPropertyCompare(property, direction); items.Sort(pc); isSorted = true; } else { isSorted = false; } sortProperty = property; sortDirection = direction; this.OnListChanged(new ListChangedEventArgs(ListChangedType.Reset, -1)); } protected override void RemoveSortCore() { isSorted = false; this.OnListChanged(new ListChangedEventArgs(ListChangedType.Reset, -1)); } //排序 public void Sort(PropertyDescriptor property, ListSortDirection direction) { this.ApplySortCore(property, direction); } } } 現 在應該流到怎麼使用了，其實很簡單 直接 BindingCollection