小编meg*_*tar的帖子

private void button2_Click(object sender, EventArgs e)
{        
    SaveFileDialog Sdialog = new SaveFileDialog();  
    Sdialog.ShowDialog();
    Sdialog.FileOk += Sdialog_FileOk;            
}

void Sdialog_FileOk(object sender, CancelEventArgs e)
{
    try
    {            
        StreamWriter FileProtocol = new StreamWriter(((SaveFileDialog)sender).FileName);
        FileProtocol.Write(textBox3.Text);
        FileProtocol.Close();
        MessageBox.Show("File is write ok");
    }
    catch (Exception)
    {
        MessageBox.Show("Unknown Error. File is not write");
    }
}

为什么事件FileOk不起作用？