How do I automatically login to another page from a Silverlight application?

Question

I have written a Silverlight page that acts as an Account Registration facility for an existing web application. So it gathers the users details then submits them to the server via a WCF RIA Service where the account is created in the database.

Basically I want to automatically log the user into the application when the service returns that the registration has been successful but I am unsure how to do this.

My current thought is that if I can POST the username and password to the existing login page then everything would be fine. However, while I can find numerous examples of how to do a HTTP post from Silverlight, they mostly seem to assume that I want to display the response within the existing Silverlight application - I don't, I want the Silverlight app to go away and I want the logged-in application to display, as if I had hit the login button on the login page.

Something along the lines of

HtmlPage.Window.Navigate(new Uri("http://mysite.com/Login.aspx", UriKind.Absolute));

except with posting capability.

I do not want to pass the username and password in the querystring.

Anyone know how I can do this? Or if this not the right approach can someone point me in the right direction.

Answer 1

Add a form (it could be hidden) to the HTML page that is hosting the Silverlight content. Then from within Silverlight, use the DOM to programmatically submit the form.