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Validate textbox inside Ajax:TabContainer using ControlToValidate

webressurs
webressurs asked
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Last Modified: 2012-05-06
I have some controls (textboxes) inside different Ajax:TabPanels that I need to validate. Since I validate controls in different panels I have to place the asp:RequiredFieldValidator below the TabContainer. Then the user will see all errormessages from different panels at the same time.

But, the asp:RequiredFieldValidator cant find the controls inside the tab container. How can I use asp:RequiredFieldValidator for controls inside a tab panel? Se attached code.
<asp:ScriptManager ID="ScriptManager" runat="server" />        
 
<Ajax:TabContainer ID="TabContainer" runat="server" ActiveTabIndex="0" EnableViewState="true" Width="98%">
    <Ajax:TabPanel runat="server" HeaderText="Generelt" ID="TabGeneral">
        <ContentTemplate> 
 
            <asp:TextBox runat="server" ID="txtUsername" />
            <asp:TextBox runat="server" ID="txtFirstname" />
            <asp:TextBox runat="server" ID="txtLastname" />
           
        </ContentTemplate>
    </Ajax:TabPanel>
    <Ajax:TabPanel runat="server" HeaderText="Plassering" ID="TabAdvanced">
        <ContentTemplate>
 
            //Other controls here
       
        </ContentTemplate>
    </Ajax:TabPanel>
    <Ajax:TabPanel runat="server" HeaderText="Interesser" ID="TabInterests">
        <ContentTemplate>
       
	    //Other controls here
     
        </ContentTemplate>
    </Ajax:TabPanel>
</Ajax:TabContainer>
 
<asp:RequiredFieldValidator runat="server" ID="reqUsername" Display="Dynamic" ErrorMessage=" -Missing Username" ControlToValidate="txtUsername" />
<asp:RequiredFieldValidator runat="server" ID="reqFirstname" Display="Dynamic" ErrorMessage=" -Missing Firstname" ControlToValidate="txtFirstname" />
<asp:RequiredFieldValidator runat="server" ID="reqLastname" Display="Dynamic" ErrorMessage=" -Missing Lastname" ControlToValidate="txtLastname" />
 
<asp:Button runat="server" ID="btnSaveUser" OnClick="btnSaveUser_Click" Text="Lagre" CausesValidation="true" />

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