Web Forms :: Saving Data From A Dynamicly Created Table?

I first create a Dynamic table with textboxes and other controls in the cells. A user then enter data into the controls and I try to save the entered data to an access database. but when A save button is pushed the controls are not found.

I have a basic one cell asp:table on the page called "Table1" and then I append this table by using the Controls.Add(TableBuilder()) function in the Page_Init().

How the code basically works:

Public Function TableBuilder() As Table
dim r = New System.Web.UI.WebControls.TableRow()
Dim c = New System.Web.UI.WebControls.TableCell()
a = New TextBox
a.ID = "Sunday"
c.Controls.Add(a)
r.Cells.Add(c)
Table1.Rows.Add(r)
TableBuilder = Table1


The table shows up fine but after I press the save button I look for the created control to get the value the user entered it says the control is not there.

SaveButton_Click(ByVal sender As Object, ByVal e As System.EventArgs)
Dim txtSunday As TextBox = Master.FindControl("MainContent").FindControl(("Sunday"))
UserEnteredData = txtSunday.text

But if I call TableBuilder() at the start of the function the control is found but the value the user entered is gone.

SaveButton_Click()
TableBuilder()
Dim txtSunday As TextBox = Master.FindControl("MainContent").FindControl(("Sunday"))
UserEnteredData = txtSunday.text