C# 除非共享，否则打印机不可用
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Printers not available unless shared
提问by Ryan
We are using classic asp to call a C# dll and in the C# dll we are using System.Drawing.Printing.PrinterSettings.InstalledPrinters to get a list of availabe printers. If the printers are not shared they will not show up when a user trys to print. The Local System account can see and print to them from a VB6 dll and Administrators can print just fine from the C# dll as you might expect. Is there some sort of permissions we need to grant the user so these printers will be available?
我们使用经典的 asp 来调用 C# dll，在 C# dll 中，我们使用 System.Drawing.Printing.PrinterSettings.InstalledPrinters 来获取可用打印机列表。如果打印机未共享，当用户尝试打印时它们将不会显示。本地系统帐户可以从 VB6 dll 中查看并打印给它们，管理员可以从 C# dll 中正常打印，正如您所期望的那样。我们是否需要授予用户某种权限才能使用这些打印机？
回答by Tim Sullivan
As I recall, running a website uses the Network User account, which may not have permission to view local printers.
我记得，运行网站使用网络用户帐户，该帐户可能没有查看本地打印机的权限。
There was a page on MSDN that said how you can impersonate another user that might have access to the printers, but I've not been able to find it.
MSDN 上有一个页面说如何模拟另一个可能有权访问打印机的用户，但我找不到它。
Edit: I posted too soon. Here's the page.
编辑：我发布得太早了。这是页面。
HTH
HTH
回答by Joel Lucsy
I'm fairly certain that impersonating a user or using their credentials does not constitute the ability to see the printers for that user. I believe explorer.exe reconnects all the network resources (shares/printers) upon logon.
我相当肯定，冒充用户或使用他们的凭据并不构成查看该用户的打印机的能力。我相信 explorer.exe 会在登录时重新连接所有网络资源（共享/打印机）。
