Assembly: System.Data (in system.data.dll)
The following are allowed state changes:
From Closed to Open, using the Open method.
From Open to Closed, using either the Close or Dispose method.
Calling the State property on an open connection increases application overhead because each such call causes a SQL_ATTR_CONNECTION_DEAD call to the underlying ODBC driver to determine whether the connection is still valid.
Windows 98, Windows 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see System Requirements.