选择否时表单仍关闭

Question

我有以下代码

private void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
    if (cmd.cetakTanya("Are you sure you want to exit ?"))
    {
        cmd.cetakSukses("Thank you for using " + cmd.title);
        startURL();
    }
}

public bool cetakTanya(string message)
{
    bool status = false;

    DialogResult dialogResult = MessageBox.Show(message, title, MessageBoxButtons.YesNo, MessageBoxIcon.Exclamation);
    if (dialogResult == DialogResult.Yes)
    {
        status = true;
    }
    else if (dialogResult == DialogResult.No)
    {
        status = false;
    }
    return status;
}

即使在确认对话框中选择“否”，为什么我的表格仍然关闭？

Answer 1

您需要取消活动：

private void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
    if (cmd.cetakTanya("Are you sure you want to exit ?"))
    {
        cmd.cetakSukses("Thank you for using " + cmd.title);
        startURL();
    }
    else
    {
        e.Cancel = true;
    }
}

Answer 2

如果单击“否”，请使用“ Cancel属性取消事件。

private void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
    if (cmd.cetakTanya("Are you sure you want to exit ?"))
    {
        cmd.cetakSukses("Thank you for using " + cmd.title);
        startURL();
    }
    else
        e.Cancel = true;
}

另外，您的方法可以重构为更紧凑的：

public bool cetakTanya(string message)
{
    var result = MessageBox.Show(message, title, MessageBoxButtons.YesNo, MessageBoxIcon.Exclamation);
    return result == DialogResult.Yes;
}