在网上找到一个找子控件的函数,修改了一下,想实现类似于jquery的selector
public List<T> GetChildren<T>(DependencyObject obj) where T : FrameworkElement
{
DependencyObject child = null;
List<T> childList = new List<T>();
for (int i = 0; i <= VisualTreeHelper.GetChildrenCount(obj) - 1; i++)
{
child = VisualTreeHelper.GetChild(obj, i);
if (child is T)
{
childList.Add((T)child);
}
childList.AddRange(GetChildren<T>(child));
}
return childList;
}
为什么有的子控件找不到.
我自己定义控件
<UserControl x:Class="Donata_DineClient.TabItemDishes"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
mc:Ignorable="d"
d:DesignHeight="300" d:DesignWidth="300">
<Grid>
<ItemsControl Name="dishItems" ItemsSource="{Binding Path=所属餐品}">
<ItemsControl.Template>
<ControlTemplate TargetType="ItemsControl">
<Border CornerRadius="5" BorderBrush="Blue" BorderThickness="3">
<ScrollViewer>
<ItemsPresenter />
</ScrollViewer>
</Border>
</ControlTemplate>
</ItemsControl.Template>
<ItemsControl.ItemsPanel>
<ItemsPanelTemplate>
<WrapPanel />
</ItemsPanelTemplate>
</ItemsControl.ItemsPanel>
<ItemsControl.ItemTemplate>
<DataTemplate>
<Button Width="auto" AllowDrop="True" IsEnabled="{Binding Path=启用}" Click="Button_Click">
<Button.Template>
<ControlTemplate>
<Border CornerRadius="5" BorderBrush="Black" BorderThickness="2" Margin="5,5,5,5">
<StackPanel Orientation="Vertical">
<Label Content="{Binding Path=名称}" Width="100" HorizontalContentAlignment="Center" Background="{Binding Path=颜色}"/>
<Label Content="{Binding Path=单价}" Width="100" HorizontalContentAlignment="Center" Background="{Binding Path=颜色}"/>
</StackPanel>
</Border>
</ControlTemplate>
</Button.Template>
</Button>
</DataTemplate>
</ItemsControl.ItemTemplate>
</ItemsControl>
</Grid>
</UserControl>
窗体里有个TabControl控件,运行的时候会动态添加TabItem,每个TabItem的ControlPresent就是自定义的控件
下面是添加TabItem的代码
dishService=new CHessianProxyFactory().Create<IDishService>(string.Format("http://{0}:8081/ssDishService",config.堂食服务器地址));
orderService=new CHessianProxyFactory().Create<IOrderService>(string.Format("http://{0}:8081/ssOrderService",config.堂食服务器地址));
var list=dishService.getAllDishTypes();
list.ForEach(item =>
{
var tabItem = new TabItem
{
Header = item.名称
};
tabItem.Content = new TabItemDishes
{
ButtonClick = (bs, be) =>
{
}
};
item.service = dishService;
tabItem.DataContext = item;
// item.DataContext = dishService.getDishesByTypeId(t.编号);
dishTypeTabs.Items.Add(tabItem); //为TabControl添加TabItem
}
);
为什么通过GetChildren<TabItem>(this)可以找到所有的TabItem
但是用GetChildren<Button>(某个TabItem)却什么也找不到
skytouch
为什么找不到子控件?
