WebExtenders provide design and runtime time support for programming against javascript functions such as Alert, Confirm, Status and DefaultStatus in ASP.NET pages from within Microsoft Visual Studio.Features in Version 1.0.0.0 * The ConfirmProvider component adds the ConfirmText property to all Button, HyperLink, ImageButton and LinkButton controls on a Web Form.

Any control whose ConfirmText property has been set, invokes the javascript confirm function in response to the user clicking the control; the specified text is displayed in a modal OK/Cancel dialog box. * The StatusProvider component adds the StatusText property to numerous controls including the Web Form itself.

Any control whose StatusText property has been set alters the javascript status property as the user moves the mouse over the control; the specified text is displayed in the status bar.

When the StatusText is set on the Web Form, this determines the defaultStatus for the clients browser (that is, the text which appears by default in the status bar). * The AlertProvider component adds the AlertText property to button controls, invoking the javascript alert function in response to the user clicking the control. * The MaskProvider component adds the MaskExpression property to TextBox controls.

The mask is applied in response to text entry, with disallowed characters being ignored.