Removes all System.Web.UI.WebControls.WizardStepBase-derived objects from the collection.
Use the WizardStepCollection.Clear method to remove all the System.Web.UI.WebControls.WizardStepBase-derived objects from the System.Web.UI.WebControls.WizardStepCollection collection.
After the WizardStepCollection.Clear method removes the System.Web.UI.WebControls.WizardStepBase-derived objects from the collection, the WizardStepCollection.Count property of the System.Web.UI.WebControls.WizardStepCollection collection has a value of zero.