How do I get current user logged in to windows?

Question

I am an active directory user and I am simply trying to print the name of the current user out in a Respnse.Write() method. From what I read from several other questions posted here I need to use

using System.Security.Principal;
string username = WindowsIdentity.GetCurrent().Name

However, when I try to write the username to the screen I get

NT AUTHORITY\\NETWORK SERVICE

instead of

domain\\12345678

Here is the code I am using to write to the screen:

Response.Write(WindowsIdentity.GetCurrent().Name);

and I have identity impersonate set to true in my web.config. What do I do next?

Edited to show suggested answers

my pageload

protected void Page_Load(object sender, EventArgs e)
{
    string userName = User.Identity.Name; 
    Response.Write(userName);
    //currently returning null
}

Answer 1

In your web.config you need authentication mode switched on to Windows and you need to disabled anonymous users

<system.web>
  <authentication mode="Windows" />
    <anonymousIdentification enabled="false" />
    <authorization>
      <deny users="?" />
    </authorization>
</system.web>

Answer 2

The reason your approach isn't working is because User.Identity isn't physically referencing your Active Directory Membership . For all intensive purposes, is trying to grab your active user through Internet Information Systems (IIS) which it can't do in the current state. Since your utilizing Web-Forms, the easiest approach would be:

• <asp:LoginView> : The following template will allow you to specify visible data for an anonymous user, logged in user, or logged out user. Which will help manage your membership system accordingly.

• Membership Not Needed - Membership isn't regulated, but would like to display or access whom is logged in for certain instances.

To implement:

<connectionStrings>
     <add name="ADConnectionString" connectionString="LDAP://..." />
</connectionStrings>

That will be your connectionString to your directory. Now to ensure the application authenticates correctly:

<authentication mode="Windows">
  <forms loginUrl="~/Account/Login.aspx" timeout="2880" />
</authentication>
<membership>
  <providers>
    <clear />
    <add name="MyADMembershipProvider" type="System.Web.Security.ActiveDirectoryMembershipProvider, System.Web, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" connectionStringName="ADConnectionString" />
  </providers>
</membership>

Now you'll be able to properly run User.Identity .

Hopefully that helps.

Answer 3

string yourVariable = User.Identity.Name;