Hello, I have created a custom section in the umbraco backoffice, and I have difficulty getting asp.net validation controls to work in my forms. Here is an example of a Panel I add to an umbraco tabview:

<umb:TabView ID="TabViewDetails" runat="server" Width="552px" Height="692px"/>

<asp:Panel ID="PanelDetails" runat="server">

    <umb:Pane ID="detailsPane" runat="server">

        <umb:PropertyPanel ID="priceProp" runat="server" Text="Price">

            <asp:TextBox ID="price2" runat="server" CssClass="textField"></asp:TextBox>

            <asp:RequiredFieldValidator ID="RequiredFieldValidator2" runat="server" 

                ControlToValidate="price2" ErrorMessage="RequiredFieldValidator" ValidationGroup="main"

                ></asp:RequiredFieldValidator>

        </umb:PropertyPanel>

    </umb:Pane>

</asp:Panel>

In the code behind I set up the form and save button like this:

            TabPage dataTab = TabViewDetails.NewTabPage("Details");

            dataTab.Controls.Add(PanelDetails);

            ImageButton saveButtonData = dataTab.Menu.NewImageButton();

            saveButtonData.ValidationGroup = "main";

            saveButtonData.CausesValidation = true;

            saveButtonData.ID = "saveDetails";

            saveButtonData.Click += new ImageClickEventHandler(saveButtonData_Click);

            saveButtonData.AlternateText = "Save";

            saveButtonData.ImageUrl = umbraco.GlobalSettings.Path + "/images/editor/save.gif";

I have tried all sorts of things and I just can't get the validators to operate either on the client side or the server side. Otherwise the form works fine.

I have not been able to find mention of such a problem anywhere, so maybe I am doing something wrong, but I've been trying for days and I would really appreciate some help.

I am using umbraco v 4.7.1 (Assembly version: 1.0.4281.20201).

Thank you.