blocks|key|276905|text|*操作符是重载的，它在内部调用Multiply。这实际上只是一个可读性的问题。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|276906|entityMap^0|0|1|F|8|0^^$0|@$1|2|3|4|5|6|7|H|8|@$9|I|A|J|B|C]|$9|K|A|L|B|C]]|D|@]|E|$]]|$1|F|3|-4|5|6|7|M|8|@]|D|@]|E|$]]]|G|$]]

The <code>*</code> operator is overloaded and calls <code>Multiply</code> internally. It's really just a matter of readability.

blocks|key|273310|text|有些语言不支持重载运算符；这些语言必须调用Multiply()方法。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|273311|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

Some languages do not support overloaded operators; those must call the Multiply() method.

blocks|key|276943|text|使用Decimal.Multiply将强制乘法接受decimal类型的输入，而不是正在使用并转换为decimal的任何类型。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|276944|Decimal.Multiply(decimal+d1,+decimal+d2)并将强制执行decimal类型的and输出。作为*，你可以这样做：|276945|decimal+result+=+yourDecimal+*+yourInt;+|code-block|syntax|javascript|276946|这允许您在某些情况下混合和匹配类型，它将为您处理所有类型，但不能保证类型是十进制的，这取决于右侧的定义。|276947|entityMap^0|2|G|P|7|1D|7|0|0|14|1A|7|1S|1|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@$9|R|A|S|B|C]|$9|T|A|U|B|C]|$9|V|A|W|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|X|8|@$9|Y|A|Z|B|C]|$9|10|A|11|B|C]|$9|12|A|13|B|C]]|D|@]|E|$]]|$1|H|3|I|5|J|7|14|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|6|7|15|8|@]|D|@]|E|$]]|$1|O|3|-4|5|6|7|16|8|@]|D|@]|E|$]]]|P|$]]

Using the <code>Decimal.Multiply</code> will force the multiply to take inputs of type <code>decimal</code> instead of whatever the type that is being used and converted to <code>decimal</code>.

<code>Decimal.Multiply(decimal d1, decimal d2)</code> and will enforce and output of type <code>decimal</code>. Where as the <code>*</code> you could do:

<pre><code>decimal result = yourDecimal * yourInt; 
</code></pre>

This allows you to mix and match types in some cases and it will handle it all for you but the type is not guaranteed to be decimal depending on how the right side is defined.

blocks|key|2980178|text|不要求.NET语言直接支持小数，但在这样的语言中，您仍然可以使用System.Decimal结构。由于也不要求.NET语言支持运算符覆盖，因此需要这些方法才能在这种情况下充分使用。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2980179|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

There is no requirement for a .NET language to directly support decimals, but in such a language you can still use the System.Decimal struct. Since there's also no requirement that a .NET language support operator overrides, the methods are needed to allow for full use in such a case.

blocks|key|273346|text|对于decimal类型，*运算符是重载的，它与Decimal.Multiply()相同。但是，重载的*运算符要求至少有一个参数是十进制的。否则，将调用其他某个*运算符。在decimal+result+=+100+*+200中，int类型首先相乘，然后转换为decimal。如果乘法结果大于Int32.MaxValue，则会出现溢出。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|273347|decimal+d1+=+2147483647+*+2;+//+Overflow
decimal+d2+=+2147483647m+*+2;+//+OK
decimal+d3+=+Decimal.Multiply(2147483647,+2);+//+OK|code-block|syntax|javascript|273348|entityMap^0|C|1|N|I|1E|1|27|1|2D|Q|40|E|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]|$9|P|A|Q|B|C]|$9|R|A|S|B|C]|$9|T|A|U|B|C]|$9|V|A|W|B|C]|$9|X|A|Y|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|Z|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|10|8|@]|D|@]|E|$]]]|L|$]]

The <code>*</code> operator is overloaded for decimal types and it is identical to <code>Decimal.Multiply()</code>. However, the overloaded <code>*</code> operator requires that at least one of the parameters is decimal. Otherwise, some other <code>*</code> operator is called. In <code>decimal result = 100 * 200</code> the int types are first multiplied and then converted to decimal. If the multiplication result is bigger than <code>Int32.MaxValue</code>, you will get an overflow.

<pre><code>decimal d1 = 2147483647 * 2; // Overflow
decimal d2 = 2147483647m * 2; // OK
decimal d3 = Decimal.Multiply(2147483647, 2); // OK
</code></pre>

<pre><code>decimal result = 100 * 200;
</code></pre>

vs

<pre><code>decimal result = Decimal.Multiply(100, 200);
</code></pre>

Why use Decimal.Multiply vs operator multiply?

decimal result = 100 * 200;vsdecimal result = Decimal.Multiply(100, 200);

问为什么使用Decimal.Multiply而不是操作符乘法？
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问为什么使用Decimal.Multiply而不是操作符乘法？
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