我将承认,我对定期表达没有任何了解。 我试图做的是作为定期表达的一部分使用一个变量。 我想对每种特性投入进行验证,而且只允许在1到999年之间作一至九一的特性,我如何做? 1、2、3、15、23、500都有效,而003、0、3t3完全无效。
感谢R。
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陷阱是把问题视为一系列当时评价的数位数而不是整数。
欢乐!
我建议如下:
以1-9为起点,然后是零、1或2位数(0-9)和零。
^[1-9][0-9]{0,2}$
如果需求发生变化,如1-9999年,这也会大大扩大。 在哪一种情况下,监管机构就变成:
^[1-9][0-9]{0,3}$
你们是否确信,这方面的解决办法是最好的?
你们可以使用。 TryParse (string, out Value)
如果是这样的话,那就确保了由此产生的结果的范围......
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