WPF筛选列表框 [英] WPF Filter a ListBox
本文介绍了WPF筛选列表框的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
我在ListBox
中加载了一个字符串列表,现在我想在TextBox
中输入文本时对其进行过滤.我该怎么办?
public void ListLoad()
{
ElementList = new List<string>(); // creation a list of strings
ElementList.Add("1"); // add a item of string
ElementList.Add("2"); // add a item of string
DataContext = this; // set the data context
}
我将它与XAML绑定在一起:
ItemsSource ="{Binding ElementList}"
解决方案
CollectionViewSource类可以在这里提供帮助.据我所知,它具有过滤,排序和分组集合的许多功能.
ICollectionView view = CollectionViewSource.GetDefaultView(ElementList);
view.Filter = (o) => {return o;}//here is the lambda with your conditions to filter
当您不需要任何过滤器时,只需将view.Filter
设置为null
.
另请在过滤
I load a list of strings in my ListBox
, now I want to filter it when I enter text in a TextBox
. How can I do it?
public void ListLoad()
{
ElementList = new List<string>(); // creation a list of strings
ElementList.Add("1"); // add a item of string
ElementList.Add("2"); // add a item of string
DataContext = this; // set the data context
}
I'm binding it in XAML with:
ItemsSource="{Binding ElementList}"
解决方案
CollectionViewSource class can help here. As far as I can tell it has many capabilities to filter, sort and group collections.
ICollectionView view = CollectionViewSource.GetDefaultView(ElementList);
view.Filter = (o) => {return o;}//here is the lambda with your conditions to filter
When you don't need any filter just set view.Filter
to null
.
Also check out this article on filtering
这篇关于WPF筛选列表框的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!
查看全文