C# 处理复合WinForms UserControl的特定组件上的单击事件

我用C#开发了一个WinForms

UserControl

。

UserControl

本质上是一个由多个子控件组成的复合控件，例如

PictureBox

、

复选框

、标签等

从调用代码中，我希望能够处理控件的

单击事件。

但是，当且仅当用户单击我控件的某个组件（例如
PictureBox
）时，我希望引发该事件。如果用户单击我控制范围内的任何其他位置，则不应引发该事件

我该怎么做呢？
假设您使用的是WinForms

您应该将pictureBox中的
单击
事件委派到您自己的事件中，然后从调用代码订阅该事件

public class MyControl : System.Windows.Forms.UserControl
{
    // Don't forget to define myPicture here
    ////////////////////////////////////////

    // Declare delegate for picture clicked.
    public delegate void PictureClickedHandler();

    // Declare the event, which is associated with the delegate
    [Category("Action")]
    [Description("Fires when the Picture is clicked.")]
    public event PictureClickedHandler PictureClicked;

    // Add a protected method called OnPictureClicked().
    // You may use this in child classes instead of adding
    // event handlers.
    protected virtual void OnPictureClicked()
    {
        // If an event has no subscribers registerd, it will
        // evaluate to null. The test checks that the value is not
        // null, ensuring that there are subsribers before
        // calling the event itself.
        if (PictureClicked != null)
        {
            PictureClicked();  // Notify Subscribers
        }
    }
    // Handler for Picture Click.
    private void myPicture_Click(object sender, System.EventArgs e)
    {
        OnPictureClicked();
    }
}