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First, go to the Sitefinity backend in Administration >> Settings switch to Advanced Settings and browse Toolboxes >> FormControls >> Sections >> Common >> Tools (this will register a RadCaptcha control inside Common section)
Click Create new and set Control CLR Type or Virtual Path to Telerik.Web.UI.RadCaptcha, Telerik.Web.UI put a name (without spaces) and a title for the UI.
Next step is to implement new form control to fire RadCaptcha validation.
In Visual Studio add a project library. Add all necessary .dll dependencies (Telerik.Sitefinity.dll, Telerik.Web.UI.dll) found in SitefinityWebApp\bin. Add this library as a reference in SitefinityWebApp in order to be accessible in Sitefinity.
"Invalid Code, please try again"
//retrieve the captcha control from the list of controls in the form
.captcha = control
sender, CancelEventArgs e)
The referenced project must be built under .NET 4.0 (if the target framework is 4.5 it will be incompatible with SitefinityWebApp)
Register this new form control as a page control.
Go to Administration >> Settings switch to Advanced Settings and browse Toolboxes >> PageControls >> Sections >> ContentToolboxSection >> Tools
Click Create new and set Control CLR Type or Virtual Path to NewFormControl.FormControlWithCaptcha put a name (without spaces) and a title for the UI.
As a result we got fully working form control with captcha: Here you can download the complete sample.
Stanislav Velikov is a Tech Support Engineer at Telerik. He joined the Sitefinity Support team in April 2011.
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