将控件的 MouseClick 事件传递给它的容器 [英] Passing control's MouseClick event to its container

问题描述

我会尽量简洁但易于理解.我有一个 PictureBox 元素的动态二维数组，它们都通过以下方式添加到同一个表单中:

I'll try to be concise but comrehensible. I have a dynamic 2-dimensional array of PictureBox elements, and they're all added to the same form via:

this.Controls.Add(PictureBoxArray[i,j]);

现在我已经设计了一个算法来确定哪些 PB 被点击，但我已经将它放在 ParentForm_MouseClick 方法中.现在我遇到了一个悖论.我创建的算法返回正确的输出，但仅当我单击表单中的空白区域时才会调用 ParentForm_MouseClick 方法，而不是当我单击图片框时.所以我的问题是 - 当用户单击表单中的任意位置时，我如何调用 ParentForm_MouseClick 方法，即我可以以某种方式覆盖 PictureBoxes 的 MouseClick 事件，以便调用 ParentForm_MouseClick 吗?

Now I've designed an algorithm that would determine which of these PBs are clicked, but I've placed it in the ParentForm_MouseClick method. And now I've reached a paradox. The algorithm I've created returns the proper output, but the ParentForm_MouseClick method is called only when I click on the empty space in the Form, not when I click on PictureBoxes. So my question is - how can I invoke ParentForm_MouseClick method when users click anywhere in the form i.e. can I somehow override PictureBoxes' MouseClick events so that ParentForm_MouseClick is invoked instead?

这刚刚发生在我身上，我可以创建一个自定义的 PictureBoxClass 类来扩展 .NET 类，并只覆盖 MouseClick() 事件来调用我之前编写的方法吗?

This just occured to me, could I create a custom PictureBoxClass Class that extends the .NET one and just override the MouseClick() event to invoke a method I've previously written?

推荐答案

看起来你把事情复杂化了.如果您需要从不同位置调用事件处理程序中的代码，最好将其抽象为不同的方法.您可以将相同的事件处理程序附加到 PictureBoxes，然后调用该方法.

It seems like you're over-complicating things. If you're going to need to call the code within an event handler from different places, it's a good idea to abstract that out to a different method. You can attach the same event handler to the PictureBoxes which then call that method.

for(int i = 0; i < PictureBoxArray.GetLength(0); i++) 
{
    for(int j = 0; j < PictureBoxArray.GetLength(1); j++)
    {
        //attach handler
        PictureBoxArray[i,j].Click += pictureBox_Click;
    }
}


void pictureBox_Click(object sender, EventArgs e)
{
   MyMethod();      
}

void parentForm_Click(object sender, EventArgs e)
{
   MyMethod();       
}

private void MyMethod()
{
   //method to be called
}

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