Problema con DataGridView

[alan_69niupi]

Hola soy nuevo en esto pero llevo un buen programando. tengo el siguiente problema: estoy usando dos datagridview uno de llena con una consulta que hago, pero a esta consulta le agrege una columno con checkbox y el problema es aque no he podido hacer que cuando seleccione varios checkbox y le de al booton aceptar me copie esas filas al otro datagridview2. ayudemne porfavor. mi codigo es el siguiente:

Imports System.Data.OleDb

Public Class ClientesFacturacion
'Code Snippet
Dim fecha_inicio As String
Dim fecha_final As String

Private Sub ClientesFacturacion_Load(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles MyBase.Load
End Sub
'metodo para inserte una columna al final del DataGridView
Private Sub Columna()
Dim column As New DataGridViewCheckBoxColumn()
With column
.Name = "seleccion"
.AutoSizeMode = DataGridViewAutoSizeColumnMode.DisplayedCells
.FlatStyle = FlatStyle.Standard
.CellTemplate = New DataGridViewCheckBoxCell()
.CellTemplate.Style.BackColor = Color.Beige
End With
DataGridView1.Columns.Insert(0, column)
End Sub

'metodo para formar la tabla que se insertara en el DataGridView
Public Function GetDataAccess2007() As DataTable
Dim Conn As New OleDbConnection
Conn.ConnectionString = "Provider=Microsoft.Jet.OLEDB.4.0;Data Source=C:\Documents and Settings\ADRIAN\Escritorio\ClientesFacuracion\FACT URACION.mdb"
Dim sentenciaSql As String = "Select NUMCLIENTE, CLIENTE, NUMFACTURA, FECHA, TOTAL From FACTURAS WHERE " & _
"FECHA Between " & _
"# " + fecha_inicio + " # And # " + fecha_final + " #"
Dim adaptador As New OleDbDataAdapter(sentenciaSql, Conn)
Dim tablaDatos As New DataTable
Try
adaptador.Fill(tablaDatos)
Columna()
Catch ex As Exception
End Try

Return tablaDatos

End Function

Private Sub BotonBuscar_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BotonBuscar.Click
Me.DataGridView1.DataSource = GetDataAccess2007()
BotonBuscar.Enabled = False
'Columna()
End Sub

Private Sub BotonSalir_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BotonSalir.Click
End
End Sub
Private Sub DataGridView1_CellContentClick(ByVal sender As System.Object, ByVal e As System.Windows.Forms.DataGridViewCellEventArgs) Handles DataGridView1.CellContentClick

If e.ColumnIndex = 0 Then
If (Convert.ToBoolean(DataGridView1.Rows(e.RowIndex). Cells(0).Value)) Then

DataGridView1.Rows(e.RowIndex).Cells(0).Value = False

Else
DataGridView1.Rows(e.RowIndex).Cells(0).Value = True
'MsgBox("ha seleccionado este fila")

End If
End If
End Sub

Private Sub BotonAceptar_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BotonAceptar.Click
'BotonBuscar.Enabled = True
DataGridView1.Enabled = False
End Sub

Private Sub DateTimePicker2_ValueChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles DateTimePicker2.ValueChanged
fecha_final = DateTimePicker2.Value
End Sub

Private Sub DateTimePicker1_ValueChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles DateTimePicker1.ValueChanged
fecha_inicio = DateTimePicker1.Value
End Sub

Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
BotonBuscar.Enabled = True
'DataGridView1.Rows.Clear()
' DataGridView1.clear()
Me.DataGridView1.DataSource = Nothing
Me.DataGridView1.Refresh()
End Sub

End Class