Access controls with in Change Password control

In order to access controls with in Change Password control

1. Change the control to Template by going to design mode then smart tag
2. Choose Convert to Template

//Access the Cancel button which is with in ChangePassworTemplateContainer  as below, it would be similar for other controls

//Get a reference to button, which is in ChangePasswordTemplateContainer
Button btnCancel = (Button)
ChangePassword1.ChangePasswordTemplateContainer.FindControl("Control_ID”);
            if (btnCancel != null)
            {
               //Action to perform
            }

References

http://msdn.microsoft.com/en-us/library/system.web.ui.webcontrols.changepassword.aspx

http://quickstarts.asp.net/QuickStartv20/aspnet/doc/ctrlref/login/changepassword.aspx