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New Telerik user - a bit confused!

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Mark Williams
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Mark Williams asked on 28 Mar 2010, 03:25 AM
I purchased Telerik Controls today (Premier Collection) and I am excited about the promise of these controls for my web site. However, a seemingly simple initial task has proven - well, problematic.

As background, we hired a vendor to create an ASP.Net application for us and this uses the RadGrid. This app is running fine in my development environment (VS 2008). I upgraded to the most recent (Marhc 2010) version and all seems to be running fine, which suggests all the basic plumbing is in place. However...

As a simple test I want to add a Captcha control to the form. I drop it into place from the Toolbox and can see the designer experience (including the arrow to pop up the context menu). However, none of the Captcha-specific options are available in that design-mode context menu. For example, the help suggests I should see an option "Enable RadCaptcha Http Handler". That option doesn't exist. That perhaps suggests that the handler is already in place but I then believe I should see additional options in the design mode, which allows me to actually configure the control (right?). I don't see any of these.

Finally, the design mode shows the "missing image" icon (a red X). Is that expected? Ironically, if I run the app I see the runtime captcha control. This is good but should I not be seeing a fill designer mode?

Thanks.

Mark

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Pero
Telerik team
answered on 31 Mar 2010, 10:23 AM
Hello Mark,

Indeed, the RadCapthca's designer is rather "poor", and a user cannot completely configure the control directly from its designer. We are planning on improving the designer, so that core features like Audio Code Generation, Refresh the CaptchaImage, can be enabled from the designer.

The "missing image" icon is expected, since the image is generated dynamically and cannot be rendered at design time. We have plans to embed a default image, that will be shown at design time only.


Best wishes,
Pero
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Mark Williams
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answered on 31 Mar 2010, 03:06 PM
Thank you, Pero. One other quick question...

I know about the three modes that the control supports (check the returned value, look at the time taken to complete the form and check for the existence of data in a hidden field). These seem mutually compatible (extra layers of protection) but, as far as I can tell, they are implemented in a way that they are mutually exclusive. Am I mistaken? I am particularly interested in implemeting a control that checks the returned value and also verifies that x seconds elapsed (I would probably like to implement the hidden field check too but that seems less important to me).

Can I implement these together?

Thanks.

Mark
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Lini
Telerik team
answered on 02 Apr 2010, 12:30 PM
Hello Mark,

I have already answered your support ticket on this issue and will paste the same response here, since this is a forum and can be viewed by other people as well.

The RadCaptcha is intended to work as a normal validator on the page. As such, it is expected that the control only validates a single setting/item. Enabling multiple protection strategies simultaneously can be confusing since the control only has one ErrorMessage property (inherited from the base IValidator interface). For this reason it is not possible to implement more than one protection for RadCaptcha - you will need to add one instance per protection strategy.

If you plan to use the RadCaptcha on multiple pages and don't want to add three instances on each page, then you can create a custom composite control that includes three RadCaptchas each with a different protection strategy and use it on your pages instead.

Sincerely yours,
Lini
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Mark Williams
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Pero
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Mark Williams
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Lini
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