C# 从FrameworkElementFactory获取值
我有一个带有一个GridViewColumn的列表视图C# 从FrameworkElementFactory获取值,c#,wpf,listview,gridviewcolumn,frameworkelementfactory,C#,Wpf,Listview,Gridviewcolumn,Frameworkelementfactory,我有一个带有一个GridViewColumn的列表视图 GridViewColumn gvc = new GridViewColumn(); DataTemplate dt = new DataTemplate(); FrameworkElementFactory ch = new FrameworkElementFactory(typeof(CheckBox)); Binding bind= new Binding("Empt
GridViewColumn gvc = new GridViewColumn();
DataTemplate dt = new DataTemplate();
FrameworkElementFactory ch = new FrameworkElementFactory(typeof(CheckBox));
Binding bind= new Binding("Empty");
ch.SetBinding(CheckBox.IsCheckedProperty, bind);
dt.VisualTree = ch;
gvc.CellTemplate = dt;
(lv.View as GridView).Columns.Add(gvc);
稍后,当我想检索复选框是否选中时,我面对的是FrameworkElementFactory,因为它没有GetValue方法,不知道如何将其强制转换为复选框,因此如何从FrameworkElementFactory获取IsChecked属性,知道我可以访问listview中的任何元素
...
var mycheckboxFEF = template.VisualTree.FirstChild;// FirstChild is my FrameWorkElementFactory checkbox
bool isempty= (......) ????
我确实通过这个例子为您的问题提供了解决方案。
这应该通过选择一个项目并按下按钮
XAML来实现:
<Button Margin="0,12,401,276" Click="Button_Click">Button</Button>
<ListView x:Name="yourListView" ItemsSource="{Binding Things}" SelectedItem="{Binding SelectedThing}" Margin="0,41,0,0">
<ListView.View>
<GridView>
<GridView.Columns>
<GridViewColumn Header="Check" Width="250">
<GridViewColumn.CellTemplate>
<DataTemplate>
<CheckBox x:Name="myCBox" Content="{Binding ThingName}"></CheckBox>
</DataTemplate>
</GridViewColumn.CellTemplate>
</GridViewColumn>
</GridView.Columns>
</GridView>
</ListView.View>
</ListView>
按钮
代码隐藏:
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
Things = new List<Thing>
{
new Thing {ThingName = "t1"},
new Thing {ThingName = "t2"},
new Thing {ThingName = "t4"},
new Thing {ThingName = "t3"},
};
DataContext = this;
}
public List<Thing> Things { get; set; }
public Thing SelectedThing { get; set; }
private void Button_Click(object sender, RoutedEventArgs e)
{
var yourListViewItem = (ListViewItem)yourListView.ItemContainerGenerator.ContainerFromItem(yourListView.SelectedItem);
CheckBox cb = FindByName("myCBox", yourListViewItem) as CheckBox;
MessageBox.Show(cb.Content + " IsChecked :" + cb.IsChecked);
}
private FrameworkElement FindByName(string name, FrameworkElement root)
{
Stack<FrameworkElement> tree = new Stack<FrameworkElement>();
tree.Push(root);
while (tree.Count > 0)
{
FrameworkElement current = tree.Pop();
if (current.Name == name)
return current;
int count = VisualTreeHelper.GetChildrenCount(current);
for (int i = 0; i < count; ++i)
{
DependencyObject child = VisualTreeHelper.GetChild(current, i);
if (child is FrameworkElement)
tree.Push((FrameworkElement)child);
}
}
return null;
}
}
public class Thing
{
public string ThingName { get; set; }
}
//
///MainWindow.xaml的交互逻辑
///
公共部分类主窗口:窗口
{
公共主窗口()
{
初始化组件();
事物=新列表
{
新事物{ThingName=“t1”},
新事物{ThingName=“t2”},
新事物{ThingName=“t4”},
新事物{ThingName=“t3”},
};
DataContext=this;
}
公共列表事物{get;set;}
公共事物已选择内容{get;set;}
私有无效按钮\u单击(对象发送者,路由目标e)
{
var yourListViewItem=(ListViewItem)yourListView.ItemContainerGenerator.ContainerFromItem(yourListView.SelectedItem);
复选框cb=FindByName(“myCBox”,yourListViewItem)作为复选框;
MessageBox.Show(cb.Content+“IsChecked:”+cb.IsChecked);
}
私有FrameworkElement FindByName(字符串名称,FrameworkElement根)
{
堆栈树=新堆栈();
树。推(根);
而(tree.Count>0)
{
FrameworkElement当前=tree.Pop();
if(current.Name==Name)
回流;
int count=VisualTreeHelper.GetChildrenCount(当前);
对于(int i=0;i
希望有帮助listview是否通过ItemsSource将集合绑定到它?是的,我的listview将集合绑定到它的
ItemsSource
那么,为什么您不能从集合中检索使您的复选框
处于选中/未选中状态的值?我只绑定了CheckBox.Text属性