排序在C＃中的列表框项目 [英] Sort the listbox items in C#

问题描述

我发展，我显示一个列表框中的项目是从数据库中获取的网页。动态我加了一些物品进去。它添加到列表框的末尾，所以我想后，我将项目添加到列表框项目进行排序。我试图的ArrayList 进行排序，但它不工作。

I develop a webpage in that I display a list box items which is fetched from a database. Dynamically I added some items into it. It adds to the end of the list box, so I want to sort the list box item after I add items. I tried Arraylist for sorting, but it is not working.

推荐答案

我知道这个问题是很老了，但我一直在寻找这样做没有比较器类的方式的ArrayList等，所以我想我会贴方法我用了别人：

I know this question is quite old, but I was looking at a way of doing this without comparer classes, ArrayLists etc. So I thought I'd paste the method I had used for others:

请注意，我的方法使用LINQ to对象，所以它只会在框架的新版本。

Please note that my method uses LINQ to Objects, so it will only work in newer versions of the Framework.

// get a LINQ-enabled list of the list items
List<ListItem> list = new List<ListItem>(ListBoxToSort.Items.Cast<ListItem>());
// use LINQ to Objects to order the items as required
list = list.OrderBy(li => li.Text).ToList<ListItem>();
// remove the unordered items from the listbox, so we don't get duplicates
ListBoxToSort.Items.Clear();
// now add back our sorted items
ListBoxToSort.Items.AddRange(list.ToArray<ListItem>());

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