Controls the expire date and time of the cookie.
public DateTime Expires { set; get; }
Value
The time and day when when the cookie will expire on the client.
Remarks
If this property isn't set, its value should be set to System.DateTime.MinValue, meaning that the cookie will expire as soon as the browser closes.
Requirements
Namespace: System.Web
Assembly: System.Web (in System.Web.dll)
Assembly Versions: 1.0.5000.0, 2.0.0.0