Documentation for this section has not yet been entered.
The SessionParameter.SessionField property identifies a name/value pair that is stored in the current session object associated with the Web browser. While the SessionParameter.SessionField property identifies the name of the pair, the System.Web.UI.WebControls.SessionParameter binds to its corresponding value at run time. If the expected session string name/value pair is not found in the session, the SessionParameter.Evaluate(System.Web.HttpContext, System.Web.UI.Control) method binds the parameter to the value of the Parameter.DefaultValue property, if it is set. If the Parameter.DefaultValue property is not set, the SessionParameter.Evaluate(System.Web.HttpContext, System.Web.UI.Control) method fails to bind the parameter to a value.