relation between components

最新推荐文章于 2024-09-04 09:31:34 发布

AlexTiger0

最新推荐文章于 2024-09-04 09:31:34 发布

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CC 4.0 BY-SA版权

文章标签： components listview object manager button null

本文链接：https://blog.youkuaiyun.com/AlexTiger0/article/details/5687332

本文介绍了一种在父容器中管理多个子组件时，如何通过声明事件和触发机制实现组件间的有效通信。通过具体代码示例展示了如何在一个子组件中触发事件，并由父组件统一管理其他相关组件的状态更新。

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in my project.i meet a problem

there is a father container .and it contains multiple components.and we generate an event in one of these child components,but the event can work needs other child ones.so we don't handler it inner itself .and when we need other ones to support , we assume the event method . it is bad work;

we should do it like this

we declare an event ,when we tigger the child event ,we can tigger the one we declared earlier. and in the child component ,we need an other method the father container have a call. and in the father component ,we can manager the other ones easily;

code

componet child 1:

public event EventHander ButtonClick;

private void button1_click(object sender,eventargs e)

{

if( ButtonClick != null)

ButtonClick(sender,e);

}

public void ClickButton()

{

this.textbox.text = "fadfasd";

}