Hi everybody,

I need your help !

I use the latest version of Ext.Net and Framework 4 of ASP.NET.

I try to create a form with formpanel. At this time, it seems to be easy, but... not necessarily.
When I want to submit my form, I have a javascript error and I don't know what it means.

Here is my ASP.NET code :

<ext:FormPanel ID="kindFormPanel" Title="Formulaire d'ajout d'un genre" Url="/ManageKinds/EditKinds"
                Method="POST" runat="server">
                <Items>
                    <ext:FormLayout runat="server">
                        <Anchors>
                            <ext:Anchor>
                                <ext:Hidden ID="KindID" DataIndex="KindID" runat="server" />
                            </ext:Anchor>
                            <ext:Anchor>
                                <ext:TextField ID="LabelTextField" FieldLabel="Libellé" DataIndex="Label" Width="250"
                                    AllowBlank="false" EmptyText="Saisissez un libellé" runat="server" />
                            </ext:Anchor>
                        </Anchors>
                    </ext:FormLayout>
                </Items>
                <FooterBar>
                    <ext:Toolbar runat="server">
                        <Items>
                            <ext:Button ID="AddKind" Text="Ajouter" runat="server">
                                <Listeners>
                                    <Click Fn="validateForm" />
                                </Listeners>
                            </ext:Button>
                        </Items>
                    </ext:Toolbar>
                </FooterBar>
            </ext:FormPanel>
And here is my javascript code :

<script type="text/javascript">
        var validateForm = function () {
            kindFormPanel.form.submit();
        };
    </script>
My error in javascript is : fElements is undefined

I think I forgot an element or property but I don't know what is it.

Can you help me please ?