public void GetCharsLengthTest() { string sql = "select clob_field from TEST where int_field = @int_field"; FbCommand command = new FbCommand(sql, this.Connection); command.Parameters.Add("@int_field", FbDbType.Integer).Value = 50; FbDataReader reader = command.ExecuteReader(); reader.Read(); long length = reader.GetChars(0, 0, null, 0, 0); reader.Close(); Assert.AreEqual(14, length, "Incorrect clob length"); }