???閱讀全文并下載例子 ：http://www.sufeinet.com/forum.php?mod=viewthread&tid=190

? 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結果發現不管怎么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，那要怎么辦呢？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<T> 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<T>?:?System.Collections.Generic.IComparer<T>?
????{
????????private?PropertyDescriptor?property;
????????private?ListSortDirection?direction;

????????public?ObjectPropertyCompare(PropertyDescriptor?property,?ListSortDirection?direction)
????????{
????????????this.property?=?property;
????????????this.direction?=?direction;
????????}

????????#region?IComparer<T>

????????///?<summary>
????????///?比較方法
????????///?</summary>
????????///?<param?name="x">相對屬性x</param>
????????///?<param?name="y">相對屬性y</param>
????????///?<returns></returns>
????????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后還不能急，我們還要來寫一個SortableBindingList <T> :BindingList <T> 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<T>?:?BindingList<T>
????{
????????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<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));
????????}

????????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 在應該流到怎么使用了，其實很簡單

直接

?BindingCollection<object?>?objList?=?new?BindingCollection<object>();
?objList?=你的結果集;
?this.dataGridView1.DataSource?=?objList;

?

但是現在是問題是我的之前用的是List，不想改，而且調用的是Dll，人家返回的就是一個List，我沒有辦法改成BindingCollection<object?>啊。

想了半天還是想出來了，只是不知道 在性能和別的方面怎么樣，所以把代碼發上來大家討論一下

我是這樣實現 的

代碼 ?//可以實現排序的類
????????????BindingCollection<historyorderInfo>?objList?=?new?BindingCollection<historyorderInfo>();
????????????//加載數據
????????????foreach?(historyorderInfo?item?in?tmpList)
????????????{
????????????????objList.Add(item);
????????????}
????????????dgvhistory.DataSource?=?objList;

?

?

這里的tmpList就是我之前使用的系統原本的List,我是使用了?foreach?把原來的數據導入到BindingCollection中的。

這樣的確定是可以實現 我想要的效果的。不知道這樣做有什么不到之處。希望能得到高人的指點啊，呵呵

?

轉載于:https://www.cnblogs.com/sufei/archive/2010/02/04/1663125.html

總結

以上是生活随笔為你收集整理的解决DataGridView绑定List后不能排序的问题的全部內容，希望文章能夠幫你解決所遇到的問題。

如果覺得生活随笔網站內容還不錯，歡迎將生活随笔推薦給好友。