Session from Page content to Masterpage

See more:

ASP

ASP.NET

Hello programmers, got a problem here as you see ive created a log-in page where i put session to be sent to masterpage when the login the correct. My problem is how can i input the data to master page. Please help
My code content page:

Imports System.Data.SqlClient
Imports System.Data

Partial Class Login
    Inherits System.Web.UI.Page
    Dim con As SqlConnection = New SqlConnection("Data Source=ML0003135586\SQLEXPRESS;Initial Catalog=ecom;Integrated Security=True")
    Dim sqlstr As String = String.Empty

    Protected Sub log_Click(ByVal sender As Object, ByVal e As System.EventArgs) Handles log.Click
        Dim strUserURL As String
        sqlstr = "SELECT * FROM [Users] WHERE ([Username]=@Username) AND ([Password]=@Password)"
        con.Open()
        Dim cmd As New SqlCommand(sqlstr, con)
        cmd.Parameters.AddWithValue("@Username", tbUser.Text)
        cmd.Parameters.AddWithValue("@Password", tbPass.Text)
        strUserURL = cmd.ExecuteScalar()
        con.Close()
        If strUserURL <> "" Then
            lblInvalid.Text = ""
            FormsAuthentication.SetAuthCookie(tbUser.Text, True)
            Session("username") = tbUser.Text
            Response.Redirect("Home.aspx")
        Else
            lblInvalid.Text = "Sorry... try again..."
        End If
    End Sub
End Class

Home.aspx code

Partial Class Home
    Inherits System.Web.UI.Page
    Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        Dim username As String = Session("username")
        Dim mpLabel As Label
        mpLabel = CType(Page.Master.FindControl("lblName"), Label)
        username = "" + mpLabel.Text
    End Sub
End Class

ive tried that code but is not working please help