Re: Decimal nullable problem

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"Jon Skeet [C# MVP]" wrote:

Well, that many conditionals and null-coalescing operators makes the
code very difficult to read for a start. I would break it up into
separate statements - I suspect you'll find the problem goes away then
anyway. I believe the issue is demonstrated by this rather simpler
code:

decimal? foo = true ? 5m : null;

The types of the rightmost two operands are "decimal" and "<null>" and
there's no implicit conversion from either one to the other. If you
cast either of the operands to "decimal?" it will work fine:

decimal? foo = true ? (decimal?) 5m : null;
or
decimal? foo = true ? 5m : (decimal?) null;

You could do the same with your original code - casting the null is
probably simpler than casting the calculation.

Well, thank you Jon, another good point of view to keep in mind.

Luigi
.

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