... 135wrapper class, 342WriteLine() command, asfunction call, 74, 160writingcode, CD115–CD119collection class, CD61–CD71constant, CD6forms code, CD175–CD179generic code, 348–349generic collections, ... 254rounding, 44run-time errorcatch blocks, assigningmultiple, CD15–CD17description of, 262, CD126error codes and, CD4–CD7exception mechanism for, CD1returning, CD1–CD3,CD7–CD8run-time type, 283• ... 196responding to, CD21–CD22throwing, CD17–CD19Exception classcreating own, CD13–CD15overriding, CD22–CD26exception mechanismexample of, CD10–CD13overview of, CD9–CD10exclamation point (!)operator,...