Question

我想回到form1但是每次单击后退按钮时，它都会触发FormClosing事件，因此它会提示我是否要退出应用程序。如何从FormClosing事件中排除其他按钮来解决此问题？

private void Form2_FormClosing_1(object sender, FormClosingEventArgs e)
{
    DialogResult dialog = MessageBox.Show("Do you really want to quit?", "Exit",
     MessageBoxButtons.YesNo);
    if (dialog == DialogResult.Yes)
    {
        Application.Exit();
    }
    else if (dialog == DialogResult.No)
    {
        e.Cancel = true;
    }
}
private void back_button_Click(object sender, EventArgs e)
{
    this.Hide();  
}

Answer 1

最好的办法是设置全局变量，告诉关闭事件显示/不显示该对话框。

尝试这些方法。

private bool CalledFromButton = false;    
private void Form2_FormClosing_1(object sender, FormClosingEventArgs e)
    {
        if(CalledFromButton)
           return;
        DialogResult dialog = MessageBox.Show("Do you really want to quit?", "Exit",
         MessageBoxButtons.YesNo);
        if (dialog == DialogResult.Yes)
        {
            Application.Exit();
        }
        else if (dialog == DialogResult.No)
        {
            e.Cancel = true;
        }
    }
    private void back_button_Click(object sender, EventArgs e)
    {
        CalledFromButton = true;
        this.Hide();  
    }

后退按钮受FormClosing事件影响

1 个答案: