Question

我有一个面向Outlook 2013的VSTO插件。我正在尝试使用事件处理程序为Form关闭事件注册一个事件。

以下是我在Form1类中的代码：

    public delegate void MyEventHandler();
    private event MyEventHandler Closing;

    private void OtherInitialize()
    {
        this.Closing += new MyEventHandler(this.Form1_Closing);
    }

同样来自Form1：

    public Form1()
    {
        InitializeComponent();
        OtherInitialize();
    }

    private void Form1_Closing(object sender, CancelEventArgs e)
    {
        // Not sure what to put here to make the application exit completely
        // Looking for something similar to Pytthon's sys.exit() or
        // Applicaton.Exit() in Forms Applicatons, I tried
        // Applicaton.Exit() it did not work
    }

当我运行此操作时，我收到错误并发出警告：

警告：

Form1.Closing hides inherited member System.Windows.Forms.Form.Closing.  Use the new keyword if hiding was intended

错误：

No overload for Form1_Closing matches delegate System.EventHandler

这些错误/警告意味着什么？如何使用X按钮或form.Close（）关闭窗体时，如何正确注册Form1_Closing事件处理程序现在我可以调用form.Close（）但它似乎没有触发Form1_Closing事件

Answer 1

无需声明Closing事件，因为父类提供了开箱即用的事件。此外，您可以简单地设置事件处理程序而不声明委托类（最新的.net版本）：

public Form1()
{
    InitializeComponent();
    OtherInitialize();
}

private void OtherInitialize()
{
    Closing += Form1_Closing;
}

private void Form1_Closing(object sender, CancelEventArgs e)
{
    // Not sure what to put here to make the application exit completely
    // Looking for something similar to Pytthon's sys.exit() or
    // Applicaton.Exit() in Forms Applicatons, I tried
    // Applicaton.Exit() it did not work
}

VSTO Addin Form Closing Handler

1 个答案: