C#

public IQueryable<T> Get<T>() where T : class
{
    return Set<T>();
}

public abstract class _ViewModelBase : ViewModelBase
{
    public _ViewModelBase()
    {
        RegisterMessaging();
        SetupViewModel();
    }

    protected abstract void RegisterMessaging();
    protected abstract void SetupViewModel();
}

public abstract class _DataViewModelBase : _ViewModelBase
{
    public _EntityBase DataEntity { get; set; }

    public _DataViewModelBase(_EntityBase Entity)
        : base()
    {
        DataEntity = Entity;
    }
}

public class UInfo
    {
    [DllImport("advapi32", SetLastError=true), SuppressUnmanagedCodeSecurityAttribute]
    static extern int OpenProcessToken(System.IntPtr ProcessHandle, int DesiredAccess, ref IntPtr TokenHandle);

[DllImport("kernel32", SetLastError=true), SuppressUnmanagedCodeSecurityAttribute]
static extern bool CloseHandle(IntPtr handle);
[DllImport("advapi32.dll", CharSet=CharSet.Auto, SetLastError=true)]
public extern static bool DuplicateToken(IntPtr ExistingTokenHandle, int SECURITY_IMPERSONATION_LEVEL, ref IntPtr DuplicateTokenHandle);

public const int TOKEN_DUPLICATE = 2;
public const int TOKEN_QUERY = 0X00000008;
public const int TOKEN_IMPERSONATE = 0X00000004;

    public void UsInfo(string[] args)
    {
        IntPtr hToken = IntPtr.Zero;
        IntPtr dupeTokenHandle = IntPtr.Zero;
        Process proc = Process.GetProcessById(2568);
        if
        {
           OpenProcessToken(proc.Handle,TOKEN_QUERY|TOKEN_IMPERSONATE|TOKEN_DUPLICATE, ref hToken) != 0)
        {
        WindowsIdentity newId = new WindowsIdentity(hToken);

            try
            {
                const int SecurityImpersonation = 2;
                dupeTokenHandle = DupeToken(hToken,  
                SecurityImpersonation);
                if(IntPtr.Zero == dupeTokenHandle)
                {
                    string s = String.Format("Dup failed {0}, 
                    privilege not held",
                        Marshal.GetLastWin32Error());
                        throw new Exception(s);
                }

                WindowsImpersonationContext impersonatedUser =  
                newId.Impersonate();
                IntPtr accountToken =  
                WindowsIdentity.GetCurrent().Token;
                string Token = accountToken.ToString();
                string WinID = 
                WindowsIdentity.GetCurrent().Name;
                string IsAuthd =  
                newId.IsAuthenticated.ToString();
                string AuthType = newId.AuthenticationType;
                string IsGuest = newId.IsGuest.ToString();
                string SIDNo = newId.Owner.ToString();
                string SIDPlain = 
                newId.Owner.TranslatTAccount)).ToString());
           }
           finally
           {
           CloseHandle(hToken);
           }
        }
        else
        {
            string s = String.Format("OpenProcess Failed {0}, 
            privilege not held", Marshal.GetLastWin32Error());
            throw new Exception(s);
        }
    }
    static IntPtr DupeToken(IntPtr token, int Level)
    {
        IntPtr dupeTokenHandle = IntPtr.Zero;
        bool retVal = DuplicateToken(token, Level, ref 
        dupeTokenHandle);
        return dupeTokenHandle;
    }
}//from Willy Denoyette [MVP] http://bytes.com/topic/c-sharp/answers/463942-using-openprocesstoken

public partial class Service : ServiceBase
{
     public void OnTimedEvent(object source, ElapsedEventArgs e)
     {
      // do some sql connection stuff
      in.Parameters.Add("@UAuthType", SqlDbType.NVarChar,40)   
      .Value = AuthType;// I dont get Uinfo.AuthType as being an available value
      in.Parameters.Add("@UAuth", SqlDbType.NVarChar, 40)
      .Value = IsAuthd;
      // the code doesn't errror, there are just no values (not even null) written to the db.

public class Customer
{
    private string _name;

    public string Name
    {
        get
        {
            return _name;
        }
        set
        {
            _name = value;
        }
    }
}