c# – 交换机中的案例怎么可能没有中断？

参见英文答案 > Switch statement fallthrough in C#?????????????????????????????????????14个
我最近继承了一些写得很差的代码.不幸的是,它是一个我们高度依赖的系统,而且没有时间重新编写它,所以我坚持维护它并重新编写文件.但是,今天我偶然发现这个包含一个开关的方法,其中一个case语句没有中断.这怎么能编译？我的理解是所有案件都必须打破,返回或转到.

private void ReadBadge_Activated(object sender,EventArgs e)
    {
        try
        {
            if (!bInHideMode)
            {
                // Set Button states
                btnCancelSwipe.Visible = true;
                btnCancelSwipe.Refresh();

                // Enable the Timeout timer
                //tmrTimeout.Enabled = true;

                // Refresh data
                switch (mManageAction)
                {
                    case "LogOnManager":
                    case "NormalUse":
                        lblSwipeStatus.Text = "Pass ID BadgenNear The Reader";
                        break;
                    case "AddNewUser":
                        lblSwipeStatus.Text = "Pass ID BadgenNear The ReadernFor: " + mUserName;
                        break;
                    default:
                        lblSwipeStatus.Text = "Pass ID BadgenNear The ReadernFor: " + mUserName;
                        break;
                }
            }
        }
        catch (Exception ex)
        {
            MessageBoxNoClick.MessageBox2(ex.Message,"Error Message");
        }
    }

case "LogOnManager":
case "NormalUse":
    lblSwipeStatus.Text = "Pass ID BadgenNear The Reader";
    break;

case "LogOnManager" || "NormalUse":
    lblSwipeStatus.Text = "Pass ID BadgenNear The Reader";
    break;