Get the Application Pool Identity programmatically
You need to make a reference to Microsoft.Web.Administration (in Microsoft.Web.Administration.dll). Microsoft.Web.Administration.dll is located in C:\Windows\System32\inetsrv.
//Add this to your using statements:
using Microsoft.Web.Administration;
//You can get the App Pool identity like this:
public string GetAppPoolIdentity(string appPoolName)
{
var serverManager = new ServerManager();
ApplicationPool appPool = serverManager.ApplicationPools[appPoolName];
appPool.ProcessModel.IdentityType = ProcessModelIdentityType.SpecificUser;
return appPool.ProcessModel.UserName;
}
Another possibility that seems to work OK for me and does not require installation of the Microsoft.Web.Administration package and its legion dependencies:
string appPoolUserIdentity = WindowsIdentity.GetCurrent().Name;
From forums.asp.net
You could use System.Security.Principal.WindowsIdentity.GetCurrent().Name
to identify the Identity in which the current application is running. This link provides a nice utility which displays the identity under which the aspx is run.