Problem with panel and form inside other form and datagridview

[AFB]

Hi:
I have a form called "Form1" and another called "Form2".
I have a panel in Form1 and I add to the panel the Form2.

The code is something like...

Dim FormuGestorProy ectos As From2
FormuGestorProy ectos = New FGESTORPROYECTO S
FormuGestorProy ectos.TopLevel = False
FormuGestorProy ectos.Dock = DockStyle.Fill
Me.PanelFormula rios.Controls.A dd(FormuGestorP royectos)
FormuGestorProy ectos.Show()
FormuGestorProy ectos.BringToFr ont()

It works Ok but in the Form2 I have a datagridview. Two of the columns of
the datagridview are not binding columns and I calculate it on the form load
event of the form2.

If a put a messagebox at the end of the form load of the form2 while I don't
push the ok buttom I see the form2 into the form1 ok but when I click the OK
buttom of the messagebox the values of the not bingind columns are losed....
why???
Here you are the code of the form2 load event:

Private Sub FGESTORPROYECTO S_Load(ByVal sender As System.Object, ByVal e As
System.EventArg s) Handles MyBase.Load

Me.TAProyectos. FillByESTADO(Me .DsGestorProyec tos1.Proyectos, "0000000001 ")
ActualizaGrid()
MessageBox.Show (Me.DGProyectos .SelectedRows(0 ).Cells(12).Val ue)

End Sub

Sub ActualizaGrid()
Dim Fila As DataGridViewRow
For Each Fila In Me.DGProyectos. Rows
'BProgreso
If Fila.Cells(10). Value 100 Then
Fila.Cells(4).V alue = 100
Else
Fila.Cells(4).V alue = Fila.Cells(10). Value
End If
'Ratio
If IsDBNull(Fila.C ells(10).Value) Or IsDBNull(Fila.C ells(11).Value)
Then
Fila.Cells(12). Value = 0
Else
Fila.Cells(12). Value = Fila.Cells(10). Value /
Fila.Cells(11). Value
End If
Next
End Sub

If I use the form2 at the startup form It works fine..

What is happend???

Thanks a lot.