RadInputManager Validation Code Behind

[juststarting]

Hi,

I have a VB.net web application with a RadInputManager validation on 2 fields (email address & password). Both these fields must be completed.

<asp:TextBox ID="txtEMail" MaxLength="100" runat="server" Width="250px" />
<asp:TextBox ID="txtPassword" MaxLength="50" runat="server" Width="250px" TextMode="Password" />

<asp:Button ID="cmdLogin" runat="server" Text="Login" />

    <telerik:RadInputManager ID="RadScreenValidator" runat="server">
        <telerik:TextBoxSetting BehaviorID="IsRequired" Validation-IsRequired="true">
            <TargetControls>
                <telerik:TargetInput ControlID="txtPassword" />
            </TargetControls>
        </telerik:TextBoxSetting>
        <telerik:RegExpTextBoxSetting BehaviorID="ValidateEMail" Validation-IsRequired="true" ValidationExpression="^\w+([-+.']\w+)*@\w+([-.]\w+)*\.\w+([-.]\w+)*$">
            <TargetControls>
                <telerik:TargetInput ControlID="txtEMail" />
            </TargetControls>
        </telerik:RegExpTextBoxSetting>
    </telerik:RadInputManager>

When the user click on the login button, I check if the email address supplied is in fact of a valid domain using DNS lookup.

How do I return to the RadInputManage that the validation failed as I dont use any Error messages but rather the yellow warning sign error indicator on the textbox itself.

Keep in mind that if the email is correctly confirmed in the database & the password is wrong, I just want to warn the user regarding the password not the email address also.

Thanx

[Maria Ilieva]

Hello,

One possibility for this scenario is to pass StartUp Script from the server and on the client just change the css class of the mentioned input to the invalid one.
Another option could be to use RadInput controls for which you could call invalid in the specific statement. For example:

radinput1._invalidate();
radinput1.updateCssClass();

Best wishes,
Maria Ilieva
the Telerik team