asp:RadioButtonList asp:RequiredFieldValidator Never fires the validation - asp.net

Question

I have a webforms page (don't ask) that I am trying to get some client side validation working on, using the standard validators.
Heres some partial code
<asp:TemplateField ItemStyle-Width="50px" HeaderText="Received">
<HeaderStyle HorizontalAlign="Center" />
<ItemTemplate>
<asp:RadioButtonList ID="rbIsRecv" RepeatDirection="Horizontal"
runat="server" ValidationGroup="Curriculum">
<asp:ListItem Value="1">Yes </asp:ListItem>
<asp:ListItem Value="0">No</asp:ListItem>
</asp:RadioButtonList>
<asp:RequiredFieldValidator runat="server" ID="RequiredFieldValidator1"
ControlToValidate="rbIsRecv" Text="Required"
ValidationGroup="Curriculum" />
</ItemTemplate>
</asp:TemplateField>
<.......>
<asp:TemplateField ItemStyle-Width="50px" HeaderText="Actually Received">
<HeaderStyle HorizontalAlign="Center" />
<ItemTemplate>
<asp:TextBox ID="txtActual" runat="server" />
<asp:RequiredFieldValidator ForeColor="Red" ValidationGroup="AllValidators" runat="server"
ControlToValidate="txtActual" ErrorMessage="All values must be filled in!" />
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
</div>
</div>
</div>
<div class="row pull-right">
<asp:Label runat="server">Employee ID: </asp:Label>
<asp:TextBox ID="txtName" runat="server" /><br />
<asp:Button ID="btnSubmit" runat="server" Text="Submit" OnClick="btnSubmit_Click" CssClass="btn-primary pull-right" />
</div>
<div class="row">
<asp:RequiredFieldValidator ForeColor="Red" ValidationGroup="AllValidators" runat="server" ControlToValidate="txtName" ErrorMessage="Please enter your employee Number!" />
<asp:ValidationSummary ID="ValidationSummary1" runat="server" ValidationGroup="AllValidators"/>
</div>
So when I submit it throws and error to the Summary Control from the txtName control properly, but none of the controls within the grids....
Any ideas?

Answer 1

You cannot validate a RadioButtonList with a RequiredFieldValidator. You need a CustomValidator for that.
<asp:CustomValidator ID="CustomValidator1" runat="server" ErrorMessage="Select an option"
ClientValidationFunction="validateRadioButtonList"></asp:CustomValidator>
<script type="text/javascript">
function validateRadioButtonList(oSrc, args) {
if ($("input[name='<%= RadioButtonList1.UniqueID %>']:checked").val() == null) {
args.IsValid = false;
} else {
args.IsValid = true;
}
}
</script>