Gets the current state of the connection.
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 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 7, Windows Vista, Windows XP SP2, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP Starter Edition, Windows Server 2008 R2, Windows Server 2008, Windows Server 2003, Windows Server 2000 SP4, Windows Millennium Edition, Windows 98
The .NET Framework and .NET Compact Framework do not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.