Question

C#中如何添加MouseEnter事件

Answer 1

this.panel1.MouseEnter += new System.EventHandler(this.panel1_MouseEnter);
private void panel1_MouseEnter(object sender, System.EventArgs e)
{
// Update the mouse event label to indicate the MouseEnter event occurred.
label1.Text = sender.GetType().ToString() + ": MouseEnter";
}

https://msdn.microsoft.com/zh-cn/library/system.windows.forms.control.mouseenter.aspx

Answer 2

在VS中，单击按钮，在属性窗口上部找到一个类似闪电的图案，将鼠标放在图案上会提示“事件”，点击，下拉列表会看到MouseEnter,然后双击就好