我工作的一个asp.net应用程序，我希望它通过串口通信，一个Arduino板。我创建了一个Windows应用程序，可以做到这一点，它的工作，但是当我用同样的code对我的asp.net应用程序，我得到一个异常，指出访问端口COM7被拒绝。现在，我一直在网上冲浪的答案，我遇到了一个论坛，让他们在谈论使用模拟权限授予asp.net。我很新，在使用.NET Framework和串口。如果有人可以帮助，请不要或者张贴可能有帮助的链接。

I am working on a asp.net application and I want it to communicate to a arduino board via a serial port. I created a windows application that could do that and it worked, but when I use the same code on my asp.net application, I get an exception that says that "Access to the port COM7 is denied". Now I have been surfing the net for an answer, I came across a forum where they were talking about granting permissions to asp.net by using impersonation. I am very new at using the .net framework and serial port. If anyone can help, please do or maybe post a link that might be helpful.

感谢名单提前。

推荐答案

ASP.net使用您的计算机上的一个特定的用户帐户。就像你在登录你的主帐户。该用户帐户没有权限做硬件的东西。

ASP.net uses a specific user account on your computer. Just like your main account you log in with. That user account has no permissions to do anything with the hardware.

要模拟在ASP.net中的其他帐户，你做到以下几点：

To impersonate the other account in ASP.net you do the following:

创建具有所有的相同权限的网络用户就，然后在web.config文件中添加以下code在配置标签之间的帐户

Create an account that has all of the same permissions that the web user does, then in the web.config file add the following code in between the configuration tags

<identity impersonate="true" userName="somedomain\newUser" password="newUsersPassword" />