将事件从自定义控件对象传递到mainwidow中的对象 [英] Pass event from custom control object to object in mainwidow

问题描述

$
你好。

将自定义控制对象的事件传递给主窗口中的对象。



我创建一个简单的自定义对象什么是形状矩形， 在Mainwidnow我有另一个矩形。

当我在自定义控件上触摸矩形时，我希望主窗口上的矩形颜色发生变化。

怎么做？

一个明确的代码示例总是受欢迎的！ :)



$

Hello.
Pass event from custom control object to object in mainwindow.

I create a simple custom object what is a shape rectangle,  on Mainwidnow I have another rectangle.
When I touch down rectangle on custom control, I want the rectangle located on mainwindow change of color.
How can do that?
A clear code example is always welcome! :)

推荐答案

Very good and simple example show how doit :)

public partial class ServerConfigs : UserControl
{

    // Create RoutedEvent
    // This creates a static property on the UserControl, SettingsConfirmedEvent, which 
    // will be used by the Window, or any control up the Visual Tree, that wants to 
    // handle the event. This is the Custom Routed Event for more info on the 
    // RegisterRoutedEvent method
    // https://msdn.microsoft.com/en-us/library/ms597876(v=vs.100).aspx

    public static readonly RoutedEvent SettingConfirmedEvent =
        EventManager.RegisterRoutedEvent("SettingConfirmedEvent", RoutingStrategy.Bubble,
        typeof(RoutedEventHandler), typeof(ServerConfigs));

    // Create RoutedEventHandler
    // This adds the Custom Routed Event to the WPF Event System and allows it to be 
    // accessed as a property from within xaml if you so desire

    public event RoutedEventHandler SettingConfirmed
    {
        add { AddHandler(SettingConfirmedEvent, value); }
        remove { RemoveHandler(SettingConfirmedEvent, value); }
    }
    ....

    // When the Save button on the User Control is clicked, use RaiseEvent to fire the 
    // Custom Routed Event

    private void btnSave_Click(object sender, RoutedEventArgs e)
    {
    ....
        // Raise the custom routed event, this fires the event from the UserControl
        RaiseEvent(new RoutedEventArgs(ServerConfigs.SettingConfirmedEvent));
    ....
    }
}




<Window>
....
<uc1:ServerConfigs SettingConfirmed="Window_UserControl_SettingConfirmedEventHandlerMethod" 
                   x:Name="ucServerConfigs" ></uc1:ServerConfigs>
...
</Window>

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