C＃應用程序重啟

Question

我的WinForms應用程序上有一個使用以下代碼的注銷選項：

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

單擊注銷選項，彈出“您確定”框，其中顯示“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，沒問題，但是單擊“否”仍會重新啟動應用程序，我該如何解決？

Answer 1

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

Answer 2

將這樣的對話框放入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();
    }
}

將您的FormClosing事件留空：

private void frmMain_FormClosing(object sender, FormClosingEventArgs e)
    {


    }

另一種方法是，如果您絕對希望在FormClosing事件中實現對話框以覆蓋OnFormClosing()

您可以這樣做：

 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);
    }

在這種情況下， FormClosing事件也將保持為空。