How to get Windows user name when identity impersonate="true" in asp.net?

Question

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.

Answer 1

try this

Principal.WindowsIdentity.GetCurrent.Name

It should return a string with the users login name

Answer 2

Unless this functionality has changed under the MVC framework, and I don't think it has, Page.User.Identity.Name should still work. Sounds like your site is set up to allow anonymous authentication. If so, try disabling it.

Answer 3

Via the Environment.UserName property?

Answer 4

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