Custom Validator not invoked in RadGrid

[Marco]

Hi everybody,

Since RadNumericTextBoxes do not provide a build-in feature to have it as required field, we implemented a custom validator that checks for a missing value. This validator works well, if the NumericTextBox is not within a RadGrid. If we use the custom validator within a EditTemplate, it is not invoked. When we use a asp:RequiredFieldValidor instead, the validation is processed. Why is a custom validor not invoked when we click "Insert" or "Update" while a RequiredFieldValidator works correctly?

Thanks in advance
Marco

<EditFormSettings EditFormType="Template">
<EditColumn FilterControlAltText="Filter EditCommandColumn column" />
<FormTemplate>
<table cellspacing="2" cellpadding="1" border="0">
<tr>
<td>
    <telerik:RadNumericTextBox ID="Amount" runat="server" DbValue='<%# Bind("Amount") %>' Width="80px" />
        <!-- This one is invoked -->
    <asp:RequiredFieldValidator ControlToValidate="Amount" ErrorMessage="*" runat="server" Text="*" />
        <!-- This one is NOT invoked but works well when not embedded in RadGrid-->
    <asp:CustomValidator ID="Amount_Required" ClientValidationFunction="CheckNumberRequired"
            ControlToValidate="Amount" runat="server" ValidateEmptyText="true" />
</td>
</tr>

[Mira]

Hello Marco,

I tried to replicate the issue you described in the Flexible Server-side Validation demo but to no avail.
You can read more about custom validators here.
If the problem persists, please send us the validation function you use.

I hope this helps.

Kind regards,
Mira
the Telerik team