asp.net sql server 2008 ทำเว็บบอร์ด อะค่ะ คือเกี่ยวกับ page load ไม่อยากให้วนเข้าpage load

 If Not IsPostBack Then
 End If

    Sub Page_Load(sender As Object, e As EventArgs)
		strConnString = "Server=localhost;Uid=sa;PASSWORD=;database=mydatabase;Max Pool Size=400;Connect Timeout=600;"
		objConn.ConnectionString = strConnString
		objConn.Open()

		IF Not Page.IsPostBack() Then
			ViewData()
		End IF	
    End Sub

	Sub ViewData()
		'*** DataTable ***'
		Dim dtAdapter As SqlDataAdapter 
		Dim dt As New DataTable
		strSQL = "SELECT * FROM customer WHERE CustomerID = '"& Request.QueryString("CustomerID") &"' "	
		dtAdapter = New SqlDataAdapter(strSQL, objConn)
		dtAdapter.Fill(dt)
		
		If dt.Rows.Count > 0 Then
			Me.txtCustomerID.Text = dt.Rows(0)("CustomerID")
			Me.txtName.Text = dt.Rows(0)("Name")
			Me.txtEmail.Text = dt.Rows(0)("Email")
			Me.txtCountryCode.Text = dt.Rows(0)("CountryCode")
			Me.txtBudget.Text = dt.Rows(0)("Budget")
			Me.txtUsed.Text = dt.Rows(0)("Used")
		End IF
	End Sub
    
    Sub btnSave_Click(sender As Object, e As EventArgs)        			
		
		strSQL = "UPDATE customer SET " & _
		" CustomerID = '"& Me.txtCustomerID.Text &"' " & _
		" ,Name = '"& Me.txtName.Text &"' " & _
		" ,Email = '"& Me.txtEmail.Text &"' " & _
		" ,CountryCode = '"& Me.txtCountryCode.Text &"' " & _
		" ,Budget = '"& Me.txtBudget.Text &"' " & _
		" ,Used = '"& Me.txtUsed.Text &"' " & _
		" WHERE CustomerID = '" & Request.QueryString("CustomerID") & "' "

		objCmd = New SqlCommand
		With objCmd
		   .Connection = objConn
		   .CommandText = strSQL
		   .CommandType = CommandType.Text		   
		End With
						
		Me.pnlAdd.Visible = False
		Try
			objCmd.ExecuteNonQuery()            
			Me.lblStatus.Text = "Record Updated"
			Me.lblStatus.Visible = True
		Catch ex As Exception
			Me.lblStatus.Text = "Record can not update"
		End Try

    End Sub

	Sub Page_UnLoad()
		objConn.Close()
		objConn = Nothing
	End Sub