[英]How to access controls from another user control without data binding?
I want to toggle a rectangle's visibility from another user control. 我想从另一个用户控件切换矩形的可见性。 I believe my current code isn't working because I'm creating a new instance of the first user control wherein I should be referencing from the old one instead. 我相信我当前的代码无法正常工作,因为我正在创建第一个用户控件的新实例,而我应该从旧实例中进行引用。 Unfortunately, I don't know how to make that reference. 不幸的是,我不知道该如何做。
User Control 1: 用户控件1:
public one()
{
InitializeComponent();
}
private void Button_Click(object sender, RoutedEventArgs e)
{
Window window = new Window
{
Title = "Second User Control",
Content = new two(),
WindowStartupLocation = WindowStartupLocation.CenterScreen,
ResizeMode = ResizeMode.NoResize
};
window.ShowDialog();
}
User Control 2: 用户控件2:
one oneUC;
public two()
{
InitializeComponent();
oneUC = new one();
}
private void Button_Click(object sender, RoutedEventArgs e)
{
oneUC.rectangleControl.Visibility = Visibility.Hidden;
}
private void Button_Click_1(object sender, RoutedEventArgs e)
{
oneUC.rectangleControl.Visibility = Visibility.Visible;
}
Concerns: 关注:
User Control 1: 用户控件1:
private void Button_Click(object sender, RoutedEventArgs e)
{
two tw = new two();
tw.oneUC = this;
Window window = new Window
{
Title = "Second User Control",
Content = tw,
WindowStartupLocation = WindowStartupLocation.CenterScreen,
ResizeMode = ResizeMode.NoResize
};
window.ShowDialog();
}
User Control 2: 用户控件2:
public two()
{
InitializeComponent();
}
In User Control 1 you need create User Control 2 and set User Control 1 into oneUC variable. 在用户控件1中,您需要创建用户控件2并将用户控件1设置为oneUC变量。 In User Control 2 constructor you have to remove oneUC = new one(); 在User Control 2构造函数中,您必须删除oneUC = new one();。 It will work for you. 它将为您工作。
Dirty Version 脏版
Create a singleton class that will have access to all User Controls, eg.: 创建一个可以访问所有用户控件的单例类,例如:
public static class Container
{
public static UserControl1 Control1 {get;set;}
public static UserControl2 Control2 {get;set;}
}
In form constructor (after InitializeComponent()) assing your controls to singleton variables like this: 在表单构造函数中(在InitializeComponent()之后),将控件赋给单例变量,如下所示:
Container.Control1 = control1;
Container.Control2 = control2;
Then in UserControl2 you can do following: 然后,在UserControl2中,您可以执行以下操作:
private void Button_Click(object sender, RoutedEventArgs e)
{
Container.Control1.rectangleControl.Visibility = Visibility.Hidden;
}
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