如何声明事件 [英] How to declare an event

问题描述

大家好，

由于我不是一位经验丰富的程序员，所以我对如何在代码中声明事件存有疑问.

我有一个dataGridView，每次更改列中的值时，都必须激活一个方法.

我知道实现这一目标的方法如下:

Hi all,

as I am not an experienced programmer, I have a doubt about how to declare an event on my code.

I have a dataGridView that has to activate a method each time a value in a column is changed.

I know the method to make it happens is this one below:

private void dgrid_CellValueChanged(object sender, ataGridViewCellEventArgs e)<br />
{ ... }

但是，即使在我的班级中包含了此方法后，它也不起作用！

我还需要做其他事情吗?我是否需要在其他地方声明任何内容(我的意思是，在事件发生时需要调用此方法)?

如果是，该怎么办?在哪里做?

提前致谢！ :)

But, even after including this method in my class it doesn''t work!

Do I have to do something else? Do I have to declare anything somewhere else ( I mean, something to call this method when the event happens )?

If yes, how do I do it and where do I do it?

Thanks in advance! :)

推荐答案

也许这就是您所需要的.将其放在表单Load事件上.

Maybe this is what you need. Put it on the form Load event.

this.dgrid.CellValueChanged += new System.Windows.Forms.DataGridViewCellEventHandler(this.dgrid_CellValueChanged);

是的，您必须订阅该事件:

Yes, you have to subscribe to that event: subscribe to the event[^]

In your form''s constructor, you could add,

dgrid.CellValueChanged += new DataGridViewCellEventHandler(dgrid_CellValueChanged);

另外，如果您使用的是Visual Studio，则在窗体/窗口的设计"视图中，转到属性"选项卡，切换到事件"(而不是属性)，然后双击所需的事件.并且所有事件的自动整理都将自动为您完成.

Also, if you''re using Visual Studio, in the Design View of your form/window, go to the Properties tab, switch to "Events" (instead of properties) and double click on the event you need. And all the wiring up of events will automatically be done for you.

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