Inserts an item into the StateManagedCollection collection at the specified index.
The zero-based index at which value should be inserted.
The object to insert into the StateManagedCollection.
The specified index is out of range of the collection.
The StateManagedCollection is read-only.
The specified value is null.
If index is -1, value is appended to the beginning of the StateManagedCollection collection. If index equals the number of items in the collection, value is appended to the end of the collection.
Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.