When I use the code on p. 179:

 Wrox.WebModules.Accounts.Business.User currentUser = new Wrox.WebModules.Accounts.Business.User((Wrox.WebMo dules.Accounts.Business.PhilePrincipal)Context.Use r);

I get a message that says that the "Specified cast is not valid." What is the problem with this line of code?

Thanks!!!!

In my case, ther was 2 problems.

Case 1 :
When starting "myaccount.aspx" without login.aspx
there was no time to set
"Context.User = (PhilePrincipal)newUser"
that make the casting problem

Case 2 :
When copy the source code to the new file(Login.aspx of new project)
In the part of
"#region Web Form Designer generated code
override protected void OnInit(EventArgs e)
{
base.OnInit(e);
initializeComponent();
}
private void InitializeComponent()
{
    this.Submit.Click += new System.EventHandler(this.Submit_Click);
    this.Load += new System.EventHandler(this.Page_Load);
}
#endregion"


The code
"
base.OnInit(e);
initializeComponent();
"
was changet to
"
initializeComponent();
base.OnInit(e);
" automatically.
I can't the reason
but after fixing it. There was no problem.
Try it.

I am also receiving the same error. I did what Jupiter has suggested but what I notice here is that my authentication mode changes to "Windows authentication mode".

Please Help !!

Hello,

It appears on subsequent requests that the reference to PhilePrincipal is lost (it's a reference to WindowsIdentity). Consider storing the object reference in Session or Cache.

Brian