I have tried to use a `Rad Captcha` control in my ASP.NET application. The control will display the images, but I can never get it to validate. No matter what I do it returns false.

I am using the current Telerik tools: `UI for ASP.NET AJAX Q3 2013 SP1`

I have an ASP.NET button, in the click event I have this code here:

```
RadCap.Validate();
Page.Validate();

if (RadCap.IsValid)
{                
    Label1.Text = "Right";
}
else
{
    Label1.Text = "Wrong";
}

```

I also have tried to add a `validation summary` to the web form, and setting the `validation group` to the same name on all the controls. Can some please tell me what I am doing wrong?