如何将 EventHandler 分配给循环中的动态对象？

Question

我正在尝试为我的项目创建一个接口，我创建了一个 PSU 结构，例如：

public struct PSU
{
    public CheckBox CallHostessButton0, CallHostessButton1,
        ReadLightButton0, ReadLightButton1, ReadLightButton2, ReadLightButton3;
    public PictureBox BeltLight, SmokeLight;
}

public bool AssignObjectsToPSU(PSU psu, CheckBox CallHostessBtn0, CheckBox CallHostessBtn1,
CheckBox ReadLightBtn0, CheckBox ReadLightBtn1, CheckBox ReadLightBtn2, CheckBox ReadLightBtn3,
PictureBox BeltLght, PictureBox SmokeLght)
{
    try
    {
        Log("[Info] Assigning objects to PUS units...");
        psu.CallHostessButton0 = CallHostessBtn0;  
        // -> In here if possible <-
        psu.CallHostessButton1 = CallHostessBtn1;
        psu.ReadLightButton0 = ReadLightBtn0;
        psu.ReadLightButton1 = ReadLightBtn1;
        psu.ReadLightButton2 = ReadLightBtn2;
        psu.ReadLightButton3 = ReadLightBtn3;
        psu.BeltLight = BeltLght; psu.SmokeLight = SmokeLght;

        LogReport("[OK]");
        return true;
    }
    catch
    {
        LogReport("[Failed]");
        return false;
    }
}

我需要为这些对象分配对象事件，例如：

PSU TestPSU = new PSU;
TestPSU.CallHostessButton0 = checkBox1;
TestPSU.CallHostessButton0.CheckedChanged += new EventHandler(checkBox1_CheckedChanged);

所以我需要其中的 12 个 "PSUs" 并且我必须为每个分配它们。像上面一样。这是我的问题：有什么简单的方法可以完成这项作业吗？例如：在方法或循环中？类似于：

public void AssignEvents(PSU p, CheckBox cb)
{
    p.CallHostessButton0.CheckedChanged += new EventHandler(cb_CheckedChanged);
}

或者在结构定义里面：

psu.CallHostessButton0 = CallHostessBtn0;
psu.CallHostessButton0.CheckedChanged = += new EventHandler(CallHostessBtn0_CheckedChanged);

感谢您的帮助。 :)

Answer 1

您可以将委托作为附加参数传递给 AssignObjectsToPSU

public bool AssignObjectsToPSU(PSU psu, ..., EventHandler checkedChangedHandler)
{
    ...
    psu.CheckedChanged  += checkedChangedHandler;
    ...
}

然后你可以用

调用它

if (AssignObjectsToPSU(psu, ..., checkBox1_CheckedChanged)) {
    ...
}

请确保不要在 checkBox1_CheckedChanged 之后添加大括号 ()。

并循环

foreach (PSU psu in myPsuList) {
    if (!AssignObjectsToPSU(psu, ..., checkBox1_CheckedChanged)) {
        break;
    }
}

如何将 EventHandler 分配给循环中的动态对象？

How to assign EventHandler to dynamic object in a loop?

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eventhandler