The Set method first checks to see if a cookie already exists in the collection and if so updates it. The Set method does not allow duplicate cookies in the cookie collection. To add duplicate cookies in the cookie collection, use the Add method.
Windows 98, Windows Server 2000 SP4, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.