Two Validation Groups in a Rad Wizard Control

I have a "RadWizard" control (from Telerik) with two "RadWizardSteps" and two different "ValidationGroups".

When I click the first button (BtnArrayAdd), the validation for the "TxtArrayName" control works correct.

When I click the second button (BtnAdd), the validation checks only the "TxtAttributeName" control but not the "CbAttributeType" control.

When I remove the first step, the validation for both controls (TxtAttributeName & CbAttributeType) works correct.

What could be the problem?

Thx, Dominik

<telerik:RadWizardStep ID="StepWebServiceOutArrays" runat="server" StepType="Auto">
                <br />
                <div class="sbLabel1"><asp:Label ID="LblArrayName" runat="server"></asp:Label></div>
                <div class="sbControl1"><telerik:RadTextBox ID="TxtArrayName" runat="server" Width="200"></telerik:RadTextBox></div>
                <div class="sbLabel2"><asp:RequiredFieldValidator ID="TxtArrayNameValidator" runat="server" ControlToValidate="TxtArrayName" ValidationGroup="ArrayValidation" EnableClientScript="true" ForeColor="Red" ></asp:RequiredFieldValidator></div>
                <br /><br /><br />
                <telerik:RadButton ID="BtnArrayAdd" runat="server" CssClass="system" Width="100" OnClick="E_Click" ValidationGroup="ArrayValidation"></telerik:RadButton>
                <telerik:RadButton ID="BtnArrayRemove" runat="server" CssClass="system" Width="100" OnClick="E_Click" CausesValidation="false"></telerik:RadButton>
                <br />
            </telerik:RadWizardStep>

            <telerik:RadWizardStep ID="StepWebServiceOutAttributes" runat="server" StepType="Auto">
                <br />
                <div class="sbLabel1"><asp:Label ID="LblAttributeName" runat="server"></asp:Label></div>
                <div class="sbControl1"><telerik:RadTextBox ID="TxtAttributeName" runat="server" Width="200"></telerik:RadTextBox></div>
                <div class="sbLabel2"><asp:RequiredFieldValidator ID="TxtAttributeNameValidator" runat="server" ControlToValidate="TxtAttributeName" ValidationGroup="AttributeValidation" EnableClientScript="true" ForeColor="Red" ></asp:RequiredFieldValidator></div>
                <br /><br />
                <div class="sbLabel1"><asp:Label ID="LblAttributeType" runat="server"></asp:Label></div>
                <div class="sbControl1"><telerik:RadComboBox ID="CbAttributeType" runat="server" Width="200"></telerik:RadComboBox></div>
                <div class="sbLabel2"><asp:RequiredFieldValidator ID="CbAttributeTypeValidator" runat="server" ControlToValidate="CbAttributeType" ValidationGroup="AttributeValidation" EnableClientScript="true" ForeColor="Red"></asp:RequiredFieldValidator></div>
                <br /><br /><br />
                <telerik:RadButton ID="BtnAdd" runat="server" CssClass="system" Width="100" OnClick="E_Click" ValidationGroup="AttributeValidation"></telerik:RadButton>
                <telerik:RadButton ID="BtnRemove" runat="server" CssClass="system" Width="100" OnClick="E_Click" CausesValidation="false"></telerik:RadButton>
                <br />
            </telerik:RadWizardStep>

There are two possibilities with your code that are causing this issue. These are explained as below.

• When using a RequiredFieldValidator for radcombobox, you must keep in mind that the text part of selected item in radcombobox is being validated. So, looking at your markup for RequiredFieldValidator, it will only work if the text part of default selected item in radcombobox is an empty string. So, make sure the default item has its text set to empty string.
• If the text part of default item in radcombobox is not an empty string but something like Select a Type then all you need to do is set InitialValue property of your validator as in following markup.

Markup when default item has non-empty text

<asp:RequiredFieldValidator ID="CbAttributeTypeValidator" runat="server" 
      ControlToValidate="CbAttributeType" ValidationGroup="AttributeValidation"
      EnableClientScript="true" ForeColor="Red"
      InitialValue="Select a type"></asp:RequiredFieldValidator>