Joe,

You first have to find the form object, then loop the controls of the form. Below is an example sub of how that can be done:

    Private Sub LoopTextBoxes()

        ' Variables
        Dim nCnt%
        Dim oType As System.Type
        Dim frmTrgt As System.Web.UI.HtmlControls.HtmlForm
        Dim txtObj As System.Web.UI.WebControls.TextBox

        ' Loop Controls - Get Form
        For nCnt = 0 To Controls.Count - 1

            ' Assign Type
            oType = Controls(nCnt).GetType

            ' Determine Match
            If InStr(UCase(oType.FullName), "HTMLFORM", CompareMethod.Text) Then

                ' Assign Value
                frmTrgt = Controls(nCnt)

                ' Bail
                Exit For

            End If

            ' Free Memory
            oType = Nothing

        Next

        ' Loop Controls - Get Form
        For nCnt = 0 To frmTrgt.Controls.Count - 1

            ' Assign Type
            oType = frmTrgt.Controls(nCnt).GetType

            ' Determine Match
            If InStr(UCase(oType.FullName), "TEXT", CompareMethod.Text) Then

                ' Assign Control
                txtObj = frmTrgt.Controls(nCnt)

                ' Assign Value
                txtObj.Text = "Got It"

                ' Free Mem
                txtObj = Nothing

            End If

            ' Free Memory
            oType = Nothing

        Next

    End Sub

Happy 4th! Hope that helps...