Adding a Compare Validator dynamically from code

[RSH]

I have a situation where I am generating webcontrols dynamically from
codebehind (1.1)

Everything is working properly except that I am also attempting to add a
Compare Validator which doesn't appear to be working, I get the error: "
Unable to find control id '67:::EX' referenced by the 'ControlToValid ate'
property of ''.
which makes sense, but it begs the question can this be done??

cmdReader = New OleDbCommand(st rSQL, cnReportDownloa ds)

dtrReader = cmdReader.Execu teReader()

PlaceHolder1.Co ntrols.Add(New LiteralControl( "<table>"))

While dtrReader.Read

PlaceHolder1.Co ntrols.Add(New LiteralControl( "<tr><td>" &
dtrReader("File Name") & "</td><td>"))

Dim tb1 As New TextBox

tb1.ID = dtrReader("File ID") & ":::DL"

tb1.Width = Unit.Pixel(30)

tb1.Text = dtrReader("Down loadsLeft")

PlaceHolder1.Co ntrols.Add(tb1)

PlaceHolder1.Co ntrols.Add(New LiteralControl( "</td><td>"))

Dim tb2 As New TextBox

tb2.ID = dtrReader("File ID") & ":::EX"

strSplit = Split(dtrReader ("Expires"), " ")

tb2.Text = strSplit(0)

tb2.Width = Unit.Pixel(120)

PlaceHolder1.Co ntrols.Add(tb2)

Dim vc As New CompareValidato r

vc.ControlToVal idate = tb2.ID

vc.Operator = ValidationCompa reOperator.Data TypeCheck

vc.Type = ValidationDataT ype.Date

vc.ErrorMessage = "Please enter a valid date in the format: mm/dd/yyyy"

PlaceHolder1.Co ntrols.Add(vc)

PlaceHolder1.Co ntrols.Add(New LiteralControl( "</td></tr>"))

End While

Dim bu As New Button

bu.ID = "Button2"

bu.Text = "Submit Changes"

PlaceHolder1.Co ntrols.Add(New LiteralControl( "<tr><td colspan='3'
align='center'> <br><br>"))

PlaceHolder1.Co ntrols.Add(bu)

PlaceHolder1.Co ntrols.Add(New LiteralControl( "</td></tr>"))

PlaceHolder1.Co ntrols.Add(New LiteralControl( "</table>"))

Thanks!

Ron