C＃如何判断DVD驱动器托盘打开？ [英] C# How to tell if DVD drive tray is open?

问题描述

我在C＃中的DVD读取和刻录应用程序。我希望能够检测到一个空驱动器（无硬盘）和开放的驱动器之间的差异

编辑：经过一些google搜索，我想一个更好的问题说明在我要访问的驱动器托盘状态 - 打开或关闭

我可以使用

  ManagementObjectSearcher（SELECT * FROM的Win32_LogicalDisk WHERE的DriveType = 5）
  

找到在系统中的所有DVD驱动器，和属性告诉我，如果有在驱动器中的磁盘。 访问属性告诉我，如果有一个空白的磁盘。

但访问为空时，驱动器是开放的，并且在驱动关闭而空。而且我没有看到，当驱动器打开或关闭改变任何其它属性。

任何人都知道的一种方式，从一个封闭的空驱动器区分一个开放带动<？ / p>

我使用Win7的，但最好的解决办法将在XP和Vista也行。

解决方案

MediaLoaded财产（Win32_CDROMDrive）会告诉你是否有一个盘装。我就是你要找有点迷茫什么：

1. 光盘托盘打开


2. 光盘托盘关闭 - 没有媒体


3. 光盘托盘关闭 - 有媒介

MediaLoaded属性将的情况下，2帮助（假）和3（真）

I have a DVD reading and burning app in C#. I want to be able to detect the difference between an empty drive (no disk) and an open drive.

Edit: After some more googling, I think a better problem description is "I want to access the drive tray status - open or closed"

I can use

ManagementObjectSearcher("SELECT * FROM Win32_LogicalDisk WHERE DriveType= 5")

to find all the dvd drives in the system, and the properties tell me if there is a disk in the drive. Access property tells me if there is a blank disk.

But Access is null when the drive is open, and when the drive is shut and empty. And I don't see any other property that changes when the drive opens or closes.

Anyone know a way to distinguish an open drive from a closed and empty drive?

I am using Win7, but ideally the solution would work on XP and Vista also.

解决方案

MediaLoaded property (Win32_CDROMDrive) will tell you whether you have a disc loaded. I am bit confused what you are looking for:

1. disk tray open
2. disk tray closed - no media
3. disk tray closed - has media

MediaLoaded property will help in case 2 (False) and 3 (True)

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