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您可以使用几种带带有日期和时间的运算符，如下所示：
| 运算符 | 运算符类型 | 结果 |
|---|---|---|
| Plus | + TimeSpan | TimeSpan |
| Negate | - TimeSpan | TimeSpan |
| Add | DateTime + TimeSpan | DateTime |
| Add | TimeSpan + DateTime | DateTime |
| Add | TimeSpan + TimeSpan | TimeSpan |
| Subtract | DateTime - DateTime | TimeSpan |
| Subtract | DateTime - TimeSpan | DateTime |
| Subtract | TimeSpan - TimeSpan | DateTime |
遵循相同的优先顺序，包括使用括号，如优先顺序。
如果DateTime或TimeSpan计算导致异常（例如OverflowException），则运算符将返回#NUM！ 错误。