C＃应用程序重启

Question

我的WinForms应用程序上有一个使用以下代码的注销选项：

    // restart the application once user click on Logout Menu Item
    private void eToolStripMenuItem_Click(object sender, EventArgs e)
    {
        Application.Restart();
    }

单击注销选项，弹出“您确定”框，其中显示“是”或“否”

private void frmMain_FormClosing(object sender, FormClosingEventArgs e)
    {
        //Double check if user wants to exit
        var result = MessageBox.Show("Are you sure you want to exit?", "Message",
        MessageBoxButtons.YesNo, MessageBoxIcon.Information);
        if (result == DialogResult.Yes)
        {
            e.Cancel = false;
        }
        else
        {
            e.Cancel = true;
        }
    }

，是的，没问题，但是单击“否”仍会重新启动应用程序，我该如何解决？

Answer 1

  DialogResult confirm = MessageBox.Show("confirm Exit?", "exit", MessageBoxButtons.YesNo);
            if (confirm==DialogResult.Yes)
                Application.Restart();
            else
            {
                //do some thing
            }

Answer 2

将这样的对话框放入MenuItem_Click中：

// restart the application once user click on Logout Menu Item
private void eToolStripMenuItem_Click(object sender, EventArgs e)
{
    //Double check if user wants to exit
    var result = MessageBox.Show("Are you sure you want to exit?", "Message",
    MessageBoxButtons.YesNo, MessageBoxIcon.Information);
    if (result == DialogResult.Yes)
    {
        Application.Restart();
    }
}

将您的FormClosing事件留空：

private void frmMain_FormClosing(object sender, FormClosingEventArgs e)
    {


    }

另一种方法是，如果您绝对希望在FormClosing事件中实现对话框以覆盖OnFormClosing()

您可以这样做：

 protected override void OnFormClosing(FormClosingEventArgs e) {

        //Double check if user wants to exit
        var result = MessageBox.Show("Are you sure you want to exit?", "Message",
        MessageBoxButtons.YesNo, MessageBoxIcon.Information);
        if (result == DialogResult.Yes)
            e.Cancel = true;
            base.OnFormClosing(e);
    }

在这种情况下， FormClosing事件也将保持为空。