在用户控件WPF中关闭弹出窗口 [英] Close popup in user control WPF
本文介绍了在用户控件WPF中关闭弹出窗口的处理方法，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
你好朋友
我有一个用户控件（UReceipt.xaml），弹出窗口打开。弹出窗口是用户控件（USearch.xaml）（包括一个列表视图和几个按钮）。
现在我想双击弹出窗口列表视图中的行并关闭用户控件。然后返回控制用户（UReceipt.xaml ）
请指导我
谢谢。
我尝试过：
< Popup x：Name =ppPlacement =Center>
< local：usearch>
Hello friends
I have a user control (UReceipt.xaml),in which a pop-up opens.Inside the pop-up is the user control(USearch.xaml) (which includes a list view and several buttons).
Now I want to double-click on the row in the list view of pop-ups and close the user control.And go back to the control user(UReceipt.xaml)
please guide me
Thank you.
What I have tried:
<Popup x:Name="pp" Placement="Center" >
<local:usearch>
推荐答案
我可以想到3种不同的方法：
1.数据绑定：
UReceipt - XAML
I can think of 3 different ways to do this:
1. DataBinding:
UReceipt - XAML
<UserControl
x:Class="Popup.UReceipt"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="clr-namespace:Popup">
<Grid>
<Button HorizontalAlignment="Center"
VerticalAlignment="Center"
Padding="10 5"
Click="Button_Click">
<Button.Content>
<Grid>
<TextBlock Text="Click Me"/>
<Popup IsOpen="{Binding ShowPopup}"
StaysOpen="False">
<local:USearch x:Name="Search"/>
</Popup>
</Grid>
</Button.Content>
</Button>
</Grid>
</UserControl>
< b> UReceipt - 代码隐藏
UReceipt - Code-behind
public partial class UReceipt : UserControl, INotifyPropertyChanged
{
public UReceipt()
{
InitializeComponent();
DataContext = this;
}
public event PropertyChangedEventHandler PropertyChanged;
private bool showPopup;
public bool ShowPopup
{
get { return showPopup; }
set
{
showPopup = value;
PropertyChanged?.Invoke(this,
new PropertyChangedEventArgs(nameof(ShowPopup)));
}
}
private void Button_Click(object sender, RoutedEventArgs e)
{
ShowPopup = true;
}
}
USearch - XAML
USearch - XAML
<UserControl
x:Class="Popup.USearch"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
<Grid Width="100" Height="200" Background="AliceBlue">
<TextBlock Text="Search"/>
<Button Content="CLOSE" Padding="10 5"
Click="Button_Click"
HorizontalAlignment="Center"
VerticalAlignment="Center" />
</Grid>
</UserControl>
USearch - 代码隐藏
USearch - Code-behind
public partial class USearch : UserControl
{
public USearch()
{
InitializeComponent();
}
private void Button_Click(object sender, RoutedEventArgs e)
{
(DataContext as UReceipt).ShowPopup = false;
e.Handled = true;
}
}
2.将 UReceipt 的引用传递给 USearch ：
UReceipt - XAML
2. Passing a reference of UReceipt to USearch:
UReceipt - XAML
<UserControl
x:Class="Popup.UReceipt"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="clr-namespace:Popup">
<Grid>
<Button HorizontalAlignment="Center"
VerticalAlignment="Center"
Padding="10 5"
Click="Button_Click">
<Button.Content>
<Grid>
<TextBlock Text="Click Me"/>
<Popup x:Name="SearchPopup"
StaysOpen="False">
<local:USearch x:Name="Search"/>
</Popup>
</Grid>
</Button.Content>
</Button>
</Grid>
</UserControl>
UReceipt - 代码隐藏
UReceipt - Code-behind
public partial class UReceipt : UserControl
{
public UReceipt()
{
InitializeComponent();
Search.Host = this;
}
private void Button_Click(object sender, RoutedEventArgs e)
{
SearchPopup.IsOpen = true;
}
}
USearch - XAML
USearch - XAML
<UserControl
x:Class="Popup.USearch"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
<Grid Width="100" Height="200" Background="AliceBlue">
<TextBlock Text="Search"/>
<Button Content="CLOSE" Padding="10 5"
Click="Button_Click"
HorizontalAlignment="Center"
VerticalAlignment="Center" />
</Grid>
</UserControl>
USearch - 代码隐藏
USearch - Code-behind
public partial class USearch : UserControl
{
public USearch()
{
InitializeComponent();
}
private UReceipt host;
public UReceipt Host { set { host = value; } }
private void Button_Click(object sender, RoutedEventArgs e)
{
host.SearchPopup.IsOpen = false;
e.Handled = true;
}
}
3. Visual Parent reference:
UReceipt - XAML
3. Visual Parent reference:
UReceipt - XAML
<UserControl
x:Class="Popup.UReceipt"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
xmlns:local="clr-namespace:Popup">
<Grid>
<Button HorizontalAlignment="Center"
VerticalAlignment="Center"
Padding="10 5"
Click="Button_Click">
<Button.Content>
<Grid>
<TextBlock Text="Click Me"/>
<Popup x:Name="SearchPopup"
StaysOpen="False">
<local:USearch x:Name="Search"/>
</Popup>
</Grid>
</Button.Content>
</Button>
</Grid>
</UserControl>
UReceipt - Code-behind
UReceipt - Code-behind
public partial class UReceipt : UserControl
{
public UReceipt()
{
InitializeComponent();
}
private void Button_Click(object sender, RoutedEventArgs e)
{
SearchPopup.IsOpen = true;
}
}
USearch - XAML
USearch - XAML
<UserControl
x:Class="Popup.USearch"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml">
<Grid Width="100" Height="200" Background="AliceBlue">
<TextBlock Text="Search"/>
<Button Content="CLOSE" Padding="10 5"
Click="Button_Click"
HorizontalAlignment="Center"
VerticalAlignment="Center" />
</Grid>
</UserControl>
USearch - Code-behind
USearch - Code-behind
public partial class USearch : UserControl
{
public USearch()
{
InitializeComponent();
}
private void Button_Click(object sender, RoutedEventArgs e)
{
this.GetVisualParent<Popup>().IsOpen = false;
e.Handled = true;
}
}
Helper Extension
Helper Extension
public static class ParentOfTypeExtensions
{
public static T ParentOfType<T>(this DependencyObject element)
where T : DependencyObject
{
if (element == null) return null;
return element.GetParents().OfType<T>().FirstOrDefault();
}
public static T GetVisualParent<T>(this DependencyObject element)
where T : DependencyObject
{
return element.ParentOfType<T>();
}
public static T GetParent<T>(this DependencyObject element)
where T : FrameworkElement
{
return element.ParentOfType<T>();
}
public static IEnumerable<DependencyObject>
GetParents(this DependencyObject element)
{
if (element == null)
throw new ArgumentNullException("element");
while ((element = element.GetParent()) != null)
yield return element;
}
public static DependencyObject GetParent(this DependencyObject element)
{
DependencyObject parent = null;
try
{
parent = VisualTreeHelper.GetParent(element);
}
catch (InvalidOperationException)
{
parent = null;
}
if (parent == null)
{
if (element is FrameworkElement frameworkElement)
parent = frameworkElement.Parent;
if (element is FrameworkContentElement frameworkContentElement)
parent = frameworkContentElement.Parent;
}
return parent;
}
}
这篇关于在用户控件WPF中关闭弹出窗口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
