Asp.net-mvc – How to get Windows user name when identity impersonate=”true” in asp.net

asp.net-mvcimpersonation

I'm creating an intranet asp.net mvc application that everyone in the company should have access to. I need to run the website impersonated for database access etc., but I want to know who each user is.

When I look at Page.User.Identity.Name it's blank. Is it possible to get the user's windows account name even though the site is running impersonated?

Edit:
Here's a little more info. I have a site in IIS 6 running with anonymous access enabled. The site is running under a system account that has access to the database (because all of the employees do not have access to the database).

My web.config has <authentication mode="Windows" /> and <identity impersonate="true"/>

My goal is that the users won't have to log in – that fact that they are logged into our network (and the fact that the site is not on an external IP) is enough authentication. I would just like to know who the user is in order to track changes they make, etc.

Best Answer

With <authentication mode="Windows"/> in your application and Anonymous access enabled in IIS, you will see the following results:

System.Environment.UserName: Computer Name
Page.User.Identity.Name: Blank
System.Security.Principal.WindowsIdentity.GetCurrent().Name: Computer Name

With <authentication mode="Windows"/> in your application, and ‘Anonymous access’ disabled and only ‘Integrated Windows Authentication’ in IIS, you will see the following results:

System.Environment.UserName: ASPNET (user account used to run ASP.NET service)
Page.User.Identity.Name: Domain\ Windows Account Name 
System.Security.Principal.WindowsIdentity.GetCurrent().Name: Computer Name\ASPNET

With <authentication mode="Windows"/> and <identity impersonate ="true"/> in your application, and ‘Anonymous access’ disabled and only ‘Integrated Windows Authentication’ in IIS, you will see the following results:

System.Environment.UserName: Windows Account Name 
Page.User.Identity.Name: Domain\ Windows Account Name 
System.Security.Principal.WindowsIdentity.GetCurrent().Name: Domain\ Windows Account Name

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