How to Add Dynamic Html Table Add Static Table Rows

I Have 

<table cellpadding="0" cellspacing="0" border="1" style="width: 500px;" id="TbtElevatorGrp"
runat="server">
</table>

.aspx page 

Code .vb

 Dim TblElvGrpDataHead As New HtmlTable

trGrpData = New HtmlTableRow()

tcGrpData = New HtmlTableCell()
trGrpData.BgColor = bgColor
tcGrpData.InnerText = "ElevatorGrpType"

tcGrpData = New HtmlTableCell()
trGrpData.BgColor = bgColor
tcGrpData.InnerText = "Elevator Type"

tcGrpData = New HtmlTableCell()
trGrpData.BgColor = bgColor
tcGrpData.InnerText = "Elevator Similer"

tcGrpData = New HtmlTableCell()
trGrpData.BgColor = bgColor
tcGrpData.InnerText = "Building Type"

trGrpData.Cells.Add(tcGrpData)
TblElvGrpDataHead.Rows.Add(trGrpData)

TblElvHeadCell.Controls.Add(TblElvGrpDataHead)

TblElvGrpData.Controls.Add(TblElvHeadCell)<----Error This Line Html Children