Dynamically Create Controls Based On Database field Asp.net - asp.net

Question

I have a database table that looks like so:
fieldid
form_id
control_type
parentid
order_number
1
1
panel
0
0
2
1
textbox
0
1
3
1
checkbox
0
0
4
1
panel
1
0
1
1
checkbox
4
0
1
1
textbox
4
1
There are other fields that I want to attach to this table but I want to dynamically create controls within the associated panel by using recursion.
I call the load_form with two parameters from the page_load event
my page has one panel in it called PnlMain and this panel is where I want the dynamically loaded controls placed within.
can anyone help me out with how to load only the controls that are associated with the "panels" with the fieldid that's equal to the associated controls parentid
Here is my code behind.
Sub load_form(c As Control, Optional parent_id As Integer = 0)
i = i + 1
Dim frmid As Integer
If Request("formid") Is Nothing Then
frmid = 1
Else
frmid = Request("formid")
End If
Dim dt As DataTable
Dim sql As String = ""
If parent_id = 0 Then
sql = "SELECT * from form_fields where form_id=" & frmid & " order by parentid, order_number"
dt = GetData(sql)
Else
sql = "SELECT * from form_fields where form_id=" & frmid & " and parentid=" & parent_id & " order by parentid, order_number"
dt = GetData(sql)
End If
If dt.Rows.Count > 0 Then
For Each row As DataRow In dt.Rows
' MsgBox(sql)
Dim p As New Panel()
If row(2).ToString.Trim(" ") = "panel" Then
' MsgBox(dt.Rows(0)(0))
Dim pnl As New Panel()
pnl.ID = "pnl" & row(0)
pnl.GroupingText = row(9)
p = pnl
load_form(p, row(0))
End If
If row(2).ToString.Trim() = "textbox" Then
Dim t As New TextBox With {
.CssClass = "form-control"}
t.Attributes.Add("showto", "true")
t.Attributes.Add("dbdata", "true")
t.Attributes.Add("placeholder", "Enter O2 Level...")
t.ID = "Txt" & i
p.Controls.Add(t)
End If
If row(2).ToString.Trim() = "checkbox" Then
Dim cb As New CheckBox With {
.CssClass = "cb form-control"}
cb.Attributes.Add("showto", "All")
cb.Attributes.Add("dbdata", "true")
cb.Attributes.Add("title", row("title").ToString.Trim())
cb.Attributes.Add("altValue", row("altvalue").ToString.Trim())
cb.Text = row(7).ToString.Trim()
cb.ID = "cb" & i
p.Controls.Add(cb)
End If
c.Controls.Add(p)
Next
End If
End Sub