“MyFirstForm_Closing”的重载均与委托“System.EventHandler”不匹配
void MyFirstForm_Closing(object sender,FormClosingEventArgs e)
{
DialogResult result = MessageBox.Show("Abort your
Choosing","Game is in process",MessageBoxButtons.YesNo);
e.Cancel = (result == DialogResult.No);
}
myForm.FormClosing += new EventHandler(MyFirstForm_Closing)
“MyFirstForm_Closing”的重载均与委托“System.EventHandler”不匹配
这个问题是什么意思 啊。。。怎么处理呢。。