Assembly: System.Data (in System.Data.dll)
Begins a database transaction.
Begins a database transaction with the specified IsolationLevel value.
Changes the current database for an open Connection object.
Closes the connection to the database.
Creates and returns a Command object associated with the connection.
Performs application-defined tasks associated with freeing, releasing, or resetting unmanaged resources.(Inherited from IDisposable.)
Opens a database connection with the settings specified by the ConnectionString property of the provider-specific Connection object.