.NET Framework 4.6 and 4.5
Indicates the state of the SqlConnection during the most recent network operation performed on the connection.
abstract State : ConnectionState with get
override State : ConnectionState with get
Returns an ConnectionState enumeration indicating the state of the SqlConnection. Closing and reopening the connection will refresh the value of State.
Supported in: 4.6, 4.5, 4, 3.5, 3.0, 2.0, 1.1
.NET Framework Client Profile
Supported in: 4, 3.5 SP1