gridpanel Autosize Columns Automatic

Hello Guys


I'm starting to work with this components, they are of huge help, but for my inexperience with this components, i'm not getting a simple thing like is make the columns auto width, the case is the follow:

In the main page i create a window

Code:

---

Dim ofertaDeVenta = New Window()
        ofertaDeVenta.ID = "OfertaDeVenta"
        ofertaDeVenta.Title = "Oferta de Venta"
        ofertaDeVenta.Width = Unit.Pixel(833)
        ofertaDeVenta.Height = Unit.Pixel(630)

        ofertaDeVenta.Modal = True
        ofertaDeVenta.Collapsible = False
        ofertaDeVenta.Resizable = True
        ofertaDeVenta.Maximizable = True
        ofertaDeVenta.AnimCollapse=False
        ofertaDeVenta.Layout="Fit"
        ofertaDeVenta.ConstrainHeader=False
        ofertaDeVenta.AutoLoad.Url = "Venta en Linea/OfertaDeVenta.aspx"
        ofertaDeVenta.AutoLoad.Mode = LoadMode.IFrame

        ofertaDeVenta.CloseAction = CloseAction.Close
        ofertaDeVenta.Render(Me.Form)
       
       
        ofertaDeVenta.Show()

---

Where ofertadeventa is another page, inside this i have a user control, that contains a gridpanel

Code:

---

...  <table>
                    <tr>
                    </tr>
                    <tr>
                        <div style="text-align: center;  margin-left: 10px; margin-right: 10px">
                            <uc1:GridArticulos ID="GridArticulos" runat="server" ></uc1:GridArticulos>
                        </div>
                    </tr>
                    <tr>
                    </tr>
                </table> ...

---

GridPanel inside GridArticulos

Code:

---

...<ext:GridPanel ID="GridPanel1" runat="server" AnimCollapse="false" Height="230" Layout="FitLayout"
        EnableColumnResize="true" AutoScroll="true" >..

---

to get the final window
Attachment 4807

When maximize the window the grid keep the same size and dont grow up

Attachment 4808

After try a lot of ways without good answer, i check that i can access to the window resize event and i try to address to an method but catch it

Code:

---

AddHandler win.DirectEvents.Resize.Event, AddressOf BestFit

---

Anyone can help me to fix this issue pls


Regards and tks 4 ur help