How to display alert, prompt and confirm box in Silverlight?

To display Alert Box, use

System.Windows.Browser.HtmlPage.Window.Alert("Alert Message");

To display Input box (prompt), use

string strValue = System.Windows.Browser.HtmlPage.Window.Prompt("What is your age?");

To display confirm box, use

bool blnResult = System.Windows.Browser.HtmlPage.Window.Confirm("Are you sure?");