Add and save with user control

This is a follow-up question to an earlier question. I have a user control on a form that I populate one for each record. Works great.  https://www.experts-exchange.com/questions/24110069/Create-custom-user-control.html?anchorAnswerId=23553906#a23553906

How do I add a new one and save changes?

I got this in a crude attempt.

Add:

 Dim value As String
        Dim value1 As String

        Dim dt As DataTable = Database1DataSet.Tables("tblofficer")
        value = dt.Rows.Count + 1
        dt.Rows.Add()
        FlowLayoutPanel1.Controls.Add(New UserControl1(value, value1))


Save:

  Dim dt1 As DataSet
        Dim dt As DataTable = Database1DataSet.Tables("tblofficer")
        Dim rows() As DataRow
        Dim AutoTextbox = Me.FlowLayoutPanel1.Controls.Item(AutoTextbox)
        Dim OfficerTextbox = Me.FlowLayoutPanel1.Controls.Item(OfficerTextbox)
        rows = dt1.Tables("tblofficer").Select("Auto = '" & AutoTextbox.Text & "' And Officer = '" & Officertextbox.Text & "'")
        If rows.Length = 0 Then
            Dim row1 As DataRow = dt.NewRow()
            row1.Item(0) = AutoTextbox
            row1.Item(1) = Officertextbox
        End If

Attached is the original code from the first post that works

Public Class UserControl1
    Public Sub New(ByVal value As String, ByVal value1 As String)
 
        ' This call is required by the Windows Form Designer.
        InitializeComponent()
 
        AutoTextBox.Text = value
        OfficerTextBox.Text = value1
 
    End Sub
   
End Class
 
 
Private Sub Form1_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
        Dim value As String
        Dim value1 As String
        Dim dt As DataTable = Database1DataSet.Tables("tblofficer")
        For Each dRow As DataRow In dt.Rows
            value = dRow(0).ToString
            value1 = dRow(1).ToString
            FlowLayoutPanel1.Controls.Add(New UserControl1(value, value1))
        Next
    End Sub

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