Dynamic table help

I have a page setup with a drop down list of users. When a user is selected and okay is pressed I call a sub FillTable()
This sub connects to SQL and fills a table with check boxes and data.
The page the table is then displayed and you can click which items you want to transfer to another user by clicking the checkbox and then there is an assign button to assign the new items.

It looks like this
Private Sub btnAssign_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnAssign.Click

Dim i As Integer
Dim chkbox As New CheckBox
For i = 1 To tblAccts.Rows.Count - 1
chkbox = tblAccts.Rows(i).Cells(0).Controls.Item(0)
If chkbox.Checked = True Then
SQLCmds.Switch
SQLCmds.Close()
End If
Next
Server.Transfer("massreassign.aspx")
End Sub

When I debug the program it says that the tblaccts.rows.count = 0.

The layout of the page contains an empty table named tblAccts. When i tried to add Filltable to the page_load event it creates duplicates. When I add it to if page.ispostback=true then I get duplicate tables. Any suggestions?