Please Help Displaying Specific Data

Hi I have used the create user wizard to create a registration page my table stores the user details and user id. I am also using the login wizard to create a log in page . I now want to display the details of the currently logged in user usind details view and allow them to view and edit their details. where and how do i create the session varible anh how do I wtire the sql select statement say select first name from table1 where (the userid I stored earlier in a table when the user registered ) = (this should be the currently logged in user'id). I am a novice so I would appreciate code snippets

My code in asp page for the details looks like this

 asp:DetailsView ID="DetailsView1" runat="server" DataSourceID="SqlDataSource1"

Height="50px" Width="125px">

<EditRowStyle BackColor="#CCFF99" />

<AlternatingRowStyle BackColor="#FFCCFF" />

</asp:DetailsView><asp:SqlDataSource ID="SqlDataSource1" runat="server"

ConnectionString="<%$ ConnectionStrings:ASPNETDBConnectionString1 %>"

SelectCommand="SELECT [FirstName], [LastName], [City], [Listing] FROM [UserDetails] WHERE ([UserId] = @UserId)">

</asp:SqlDataSource>

 

novice This shows no data when I test it. I have tried the folling in the .vb page no luck.

 Protected Sub DetailsView1_DataBound(ByVal sender As Object, ByVal e As System.EventArgs) Handles DetailsView1.DataBound

Dim UserId As Integer = Me.DetailsView1.DataItem("userID")Session("_UserID") = UserId

End Sub