lblMessage Need to Retrieve FirstName and LastName code-behind

[codewar]

Hello, Working on this program as to where I need to cultivate this Message to retrieve both the First and Last Name. Working with Cookies with ASP.NET. A simple log in form.

Here is the code to just retrieving the First name that the user inputted; Yes, it does work for just the first name.

//get first name from session state and set welcome message if it exists
        string firstName = (string)Session["FirstName"];
        if (firstName != null)
        {
            lblWelcome.Text = "Welcome back, " + (string)Session["FirstName"] + "!";
        }

But as I mentioned, I actually need both of the first and last names. And here is my code that I used to try to work this out; but as it would be, it is not retrieving both of them, still just the first name.

//get firstname from cookie and set welcome message if it exists
        //HttpCookie cookie = Request.Cookies["FirstName"];
        //if (cookie != null)
        //    lblWelcome.Text = "Welcome back, " + cookie.Value + "!";

        //need to get first & last name from session state and set welcome message if it exists

        string firstName = (string)Session["FirstName"];
        string lastName = (string)Session["LastName"];
        if ((firstName != null) && (lastName != null))
        {
            lblWelcome.Text = "Welcome back, " + (string)Session["FirstName"] + (string)Session[" LastName"] + "!";
        }

This is the code behind on my Order.aspx page (snippet)

 protected void Page_Load(object sender, EventArgs e)
    {
        // get entry data from cookies
        //if (Request.Cookies["FirstName"] != null)
        //    txtFirstName.Text = Request.Cookies["FirstName"].Value;
        //if (Request.Cookies["LastName"] != null)
        //    txtLastName.Text = Request.Cookies["LastName"].Value;

        //get entry data from session state
        if (!IsPostBack)
        {
            string firstName = (string)Session["FirstName"];
            if (firstName != null) txtFirstName.Text = (string)Session["FirstName"];
            string lastName = (string)Session["FirstName"];  //my thoughts on this line is that the FirstName should be replaced with ["LastName"]
            if (lastName != null) txtLastName.Text = (string)Session["LastName"];
            txtFirstName.Focus();
        }       
    }    

Would anyone offer me some suggestions as to what I might be doing incorrect?

[chriswelborn]

Are you sure that Session["LastName"] is being set properly in the first place? I mean the cookie is being set properly? I think the only reason your new code wouldn't work is if Session["LastName"] is null.

And yes, the string lastName = (string)Session["LastName"]; replacement would be correct.

[JorgeM]

Yes line 14 should be LastName.

It maybe null or could be an empty string as suggested by Cj. Try this to see what the results are...

 if (string.IsNullOrWhiteSpace(lastname)) txtLastName.Text = "oops";

This will test if the value is null, empty, or white space. If it is then the condition is true and at least you will have identified the problem.