... MTC-336J33486 Steve Johnson MTC-118K69880 Jenney King MTC-324course_id faculty_id classroomCSC-131A A52990 TC-109CSC-13 1C A52990 TC-109CSC-132A J33486 TC-303CSC-132B B78880 TC-302CSC-230 ... replace the prefi x acc, which precedes all Data Provider – dependent objects in the codes in this form, such as accConnection, accCommand, accDataReader, and accDataAdapter, with the prefi x sql. ... { if (sqlConnection.State == ConnectionState.Open) { sqlConnection.Close(); sqlConnection.Dispose(); } Application. Exit(); } SQLSelectRTObject.LogInForm cmdCancel_Click() Figure...