C# 从用户控制访问父窗口
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Access parent window from User Control
提问by Lazy Lion
I am trying to access parent window from user control.
我正在尝试从用户控件访问父窗口。
userControl1 uc1 = new userControl1();
mainGrid.Children.Add(uc1);
through this code I load userControl1to main grid.
通过这段代码我加载userControl1到主网格。
But when I click on a button inside userControl1then I want to load another userControl2into mainGridwhich is in main window?
但是，当我点击一个按钮里面userControl1，然后我想在另一userControl2到mainGrid这是在主窗口？
回答by Vlad Bezden
Have you tried
你有没有尝试过
Window yourParentWindow = Window.GetWindow(userControl1);
回答by KF2
Make a static instance of main window ,you can simply call it in your user control:
创建主窗口的静态实例，您可以简单地在用户控件中调用它：
See this example:
看这个例子：
Window1.cs
Window1.cs
public partial class Window1 : Window
{
public Window1()
{
InitializeComponent();
_Window1 = this;
}
public static Window1 _Window1 = new Window1();
}
UserControl1.CS
用户控件1.CS
public partial class UserControl1 : UserControl
{
public UserControl1()
{
InitializeComponent();
}
private void AddControl()
{
Window1._Window1.MainGrid.Children.Add(usercontrol2)
}
}
回答by Lazy Lion
Thanks for help me guys. i got another solution
谢谢各位帮我。我有另一个解决方案
((this.Parent) as Window).Content = new userControl2();
this is perfectly works
这是完美的作品
回答by seabass2020
This gets the root level window:
这将获取根级别窗口：
Window parentWindow = Application.Current.MainWindow
or the immediate parent window
或直接父窗口
Window parentWindow = Window.GetWindow(this);
回答by Miloslav Raus
The only reason why the suggested
建议的唯一原因
Window yourParentWindow = Window.GetWindow(userControl1);
didnt work for you is because you didn't cast it to the right type:
对您不起作用是因为您没有将其转换为正确的类型：
var win = Window.GetWindow(this) as MyCustomWindowType;
if (win != null) {
win.DoMyCustomWhatEver()
} else {
ReportError("Tough luck, this control works only in descendants of MyCustomWindowType");
}
Unless there has to beway more coupling between your type of windows and your control, I consider your approach bad design .
除非您的窗口类型和控件之间必须有更多的耦合，否则我认为您的方法设计很糟糕。
I'd suggest to pass the grid on which the control will operate as a constructor parameter, make it into a property or search for appropriate (root ?) grid inside any Windowdynamically.
我建议传递控件将在其上作为构造函数参数运行的网格，使其成为一个属性或在任何Window动态内搜索适当的（根？）网格。
回答by Suneth Thotagamuwa
Modify the constructor of the UserControl to accept a parameter of MainWindow object. Then pass the MainWindow object to the UserControl when creating in the MainWindow.
修改 UserControl 的构造函数以接受 MainWindow 对象的参数。然后在 MainWindow 中创建时将 MainWindow 对象传递给 UserControl。
MainWindow
主窗口
public MainWindow(){
InitializeComponent();
userControl1 uc1 = new userControl1(this);
}
UserControl
用户控件
MainWindow mw;
public userControl1(MainWindow recievedWindow){
mw = recievedWindow;
}
Example Event in the UserControl
UserControl 中的示例事件
private void Button_Click(object sender, RoutedEventArgs e)
{
mw.mainGrid.Children.Add(this);
}
