ASP.net会话变量aspnetdb登录控件

大家好，我正在尝试为我的登录控件携带一个会话变量，我正在使用该变量传递到另一个页面并显示他们的详细信息。我正在使用aspNetDB。“我的用户名”已设置为整数，因为它连接到另一个数据库表，其中显示用户详细信息，以下是我的代码：

    Protected Sub Login1_LoggingIn(sender As Object, e As System.Web.UI.WebControls.LoginCancelEventArgs) Handles Login1.LoggingIn

            Session("StaffNo") = Login1.UserName()

        End Sub

然后，代码被发送到我的另一个页面，以便在加载到数据网格时显示其详细信息，但会话似乎没有携带：

Protected Sub Page_Load(sender As Object, e As System.EventArgs) Handles Me.Load
        Try
            Dim Staff As String = CType(Session.Item("StaffNo"), String)
            Dim conn As SqlConnection
            Dim cmd As SqlCommand

            Dim cmdstring As String = "SELECT * FROM [User] WHERE studentnum = @StaffNo"
            conn = New SqlConnection("Data Source=.\SQLEXPRESS;AttachDbFilename=|DataDirectory|\Database.mdf;Integrated Security=True;User Instance=True")
            cmd = New SqlCommand(cmdstring, conn)

            cmd.Parameters.Add("@StaffNo", SqlDbType.Char).Value = Staff
            conn.Open()

            Dim myReader As SqlDataReader

            myReader = cmd.ExecuteReader(CommandBehavior.CloseConnection)


            GridView1.DataSource = myReader
            GridView1.DataBind()

            conn.Close()
        Catch ex As Exception
            Response.Write("An error has occurred")
        End Try

    End Sub

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如果你遇到异常，你不想知道是哪一个吗？你应该显示

ex.ToString（）

Cheers刚刚排序的结果我在studentnum的位置，而我应该让Staff\u No.TYhanks来帮助你

Protected Sub Page_Load(sender As Object, e As System.EventArgs) Handles Me.Load
    Try  
Dim cmdstring As String = "SELECT * FROM [User] WHERE studentnum = '"& Session("StaffNo").ToString & "' "

End Sub