accessing master page session in child pages - asp.net

Question

Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
lblSTuName.Text = "Welcome! " + Session("StuID")
If con.State = ConnectionState.Closed Then
con.Open()
End If
cmd = New OleDbCommand
cmd.Connection = con
cmd.CommandText = "select [Image] from tblStudent where Uname='" + Session("StuID") + "'"
Dim dr As OleDbDataReader
dr = cmd.ExecuteReader()
If dr.Read() Then
stuImage.ImageUrl = dr("Image")
Else
stuImage.ImageUrl = Nothing
End If
con.Close()
End Sub
i have this code in student.master page
and then i want the session("StuID") to use in chlid page also....i have written the following code in the child page student.aspx-
If Not IsPostBack Then
Dim stname As Label = TryCast(Master.FindControl("lblSTuName"), Label)
stuN = stname.Text
If con.State = ConnectionState.Closed Then
con.Open()
End If
cmd = New OleDbCommand
cmd.Connection = con
cmd.CommandText = "select [RollNo],[CourceName] from tblStudent where StuName='" + stuN + "'"
dr = cmd.ExecuteReader()
If dr.Read() Then
MsgBox("read complete")
Else
MsgBox("not success!")
End If
End If
but i am not able to use session here in the child page using this code.Can i get any help??

Answer 1

You have only one session object for each user. You can access this data from any page. Try to use student name directly from the session. You don't need any master page for this
.....
Dim stuN = Session("StuID");
If con.State = ConnectionState.Closed Then
con.Open()
End If
cmd = New OleDbCommand
cmd.Connection = con
cmd.CommandText = "select [RollNo],[CourceName] from tblStudent where StuName='" + stuN + "'"
// or better to try
cmd.CommandText = "select [RollNo],[CourceName] from tblStudent where Uname='" + stuN + "'"
......