C# FormClosing！！！

[yoyo83773]

A NEW 出B ，然后A隐藏，B 上关闭想弹出确认框，“确定”的话结束进程，否则不变化！确定两次怎么解决！而且 弄成确定一次的了，但进程没有结束！

[wuyq11]

private void Form1_FormClosing(object sender, FormClosingEventArgs e)
{

if (MessageBox.Show("确定退出", "提示",MessageBoxButtons.OKCancel, MessageBoxIcon.Information) == DialogResult.Cancel)
{
e.Cancel = true;
}
}
Application.Exit() 停止在所有线程上运行的所有消息循环，并关闭应用程序的所有窗口

[pos老吴]

学习

[初见·冬雪]

学习

[mngzilin]

form1中：

private void button1_Click(object sender, EventArgs e)
{
    Form2 fm = new Form2();
    fm.Owner = this;
    fm.Show();
    this.Hide();
}
private void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
    if (MessageBox.Show("确认关闭？", "退出", MessageBoxButtons.OKCancel) == DialogResult.OK)
    {
        e.Cancel = false;
    }
    else
        e.Cancel = true;
}

form2中：

private void Form2_FormClosing(object sender, FormClosingEventArgs e)
{
    if (MessageBox.Show("确认关闭？", "退出", MessageBoxButtons.OKCancel) == DialogResult.OK)
    {
        e.Cancel = false;
        this.Owner.Show();
    }
    else
        e.Cancel = true;
}

[ysz89757]

这个问题经常有人问

[烈火蜓蜻]

private void button1_Click(object sender, EventArgs e)
{
    B fm = new B();
    fm.FormClosing += A_FormClosing;
    this.FormClosing += A_FormClosing;
    fm.Show();
    this.Hide();
}
private void A_FormClosing(object sender, FormClosingEventArgs e)
{
    if (MessageBox.Show("确认关闭？", "退出", MessageBoxButtons.OKCancel) == DialogResult.OK)
    {
        Application.Exit();
    }
    else
        e.Cancel = true;
}

B窗体代码不用写任何关于确定关闭的代码

不用写那么多代码

[szxuzheng]

把 Application.Exit();写在FormClosed事件即可！
--------------------------------------------------------------------------
private void frmAdminMain_FormClosed(object sender, FormClosedEventArgs e)
{
DialogResult dr = MessageBox.Show("确认退出？", "标题", MessageBoxButtons.OKCancel, MessageBoxIcon.Question, MessageBoxDefaultButton.Button1, MessageBoxOptions.DefaultDesktopOnly);
if (dr == DialogResult.OK)
{
Application.Exit();
}
else
{
frmAdminMain fa = new frmAdminMain();
fa.Show();
}

}